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  1. Table of Contents
  2. Intro
  3. Design
    1. Stand
    2. Ergonomics
    3. Back
    4. Borders
    5. Thickness
    6. Build Quality
  4. Picture Quality
    1. Contrast
    2. Local Dimming
    3. SDR Peak Brightness
    4. HDR Peak Brightness
    5. Horizontal Viewing Angle
    6. Vertical Viewing Angle
    7. Gray Uniformity
    8. Black Uniformity
    9. Pre Calibration
    10. Post Calibration
    11. SDR Color Gamut
    12. SDR Color Volume
    13. HDR Color Gamut
    14. HDR Color Volume
    15. Image Retention
    16. Reflections
    17. Gradient
    18. Color Bleed
  5. Motion
    1. Motion Blur
    2. Image Flicker
    3. Refresh Rate
  6. Inputs
    1. Input Lag
    2. Resolution and Size
    3. Main Inputs
    4. Other Inputs
    5. Total Inputs
  7. Features
    1. Additional Features
    2. On-Screen Display (OSD)
    3. Controls
    4. In The Box
  8. Conclusion
  9. Q&A
Reviewed on Nov 27, 2017 , Ian Cumming, Mehdi Azzabi, Eric Bousquet

LG 34UC79G-B Curved UltraWide Gaming Monitor
MONITOR REVIEW

Usage Ratings - Version 1.0
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Test Benches:

  • 1.0: Fall 2017
7.5 Mixed Usage
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Score components:
  • 30% Office
  • 30% Multimedia
  • 25% Gaming
  • 10% Media Creation
  • 5% HDR Gaming
7.6 Office
8.1 Gaming
7.2 Multimedia
7.2 Media Creation
5.6 HDR Gaming
Size : 34 "
Resolution : 2560x1080
Refresh Rate : 144 Hz
LCD Type
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What it is: Type of LCD technology used by the monitor.
When it matters: Different technologies have different viewing angle properties.
:
IPS

The LG 34UC79G-B IPS LCD is a versatile curved 34-inch ultrawide monitor with very wide viewing angles. Its 144 Hz refresh rate and FreeSync support make it particularly well suited for gaming, but its wide aspect ratio is also useful for more productive environments. It isn't the brightest monitor, but its gentle curve makes it both immersive and enjoyable to use. Unfortunately, its low resolution might be disappointing for some, and its brightness could be a bit better.

Test Results
Design 7.5
Picture Quality 6.6
Motion 9.1
Inputs 8.9
Pros
  • Wider than average viewing angle
  • High 144 Hz refresh rate is great for gaming
  • FreeSync support
Cons
  • Could be brighter
  • Cloudy blacks with visible backlight bleed

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7.5

Design

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Score components: Subjectively assigned
LG 34UC79G-B Design Picture
Curved : Yes
Curve radius : 3800R
Weight (without stand) : 13.8lbs (6.3 kg)
Weight (with stand) : 18.6lbs (8.4 kg)

The design of the UC79 is good. The base of the stand looks similar to the LG UM69G, however, this model allows for height adjustments which makes it easier to find a comfortable viewing position. All of the inputs are located out the back of the monitor. The red accents help the monitor to stand out.

Stand
LG 34UC79G-B Stand picture
Width : 19.1" (48.4 cm)
Depth : 10.0" (25.5 cm)

The stand is very similar to the LG UM69G and looks good. It supports the wide monitor well and feels very stable. The footprint is quite large, but this is often necessary for a monitor of this size.

4.8 Ergonomics
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What it is: How much the position of the screen can be adjusted to match the viewing preference of the user.
When it matters: All usages, but especially office and gaming use.
Score components:
  • 45% Height Adjustment
  • 18% Switch portrait/landscape
  • 18% Swivel Range
  • 18% Tilt Range
LG 34UC79G-B Ergonomics picture
Height Adjustment : 4.7" (11.9 cm)
Switch portrait/landscape : No
Swivel Range : N/A
Tilt Range : -22.5° to 2.5°

The ergonomic adjustments available on this LG monitor are limited. It is only possible to adjust the height and tilt (and the range of these is quite narrow). This may make it a bit more difficult to find a comfortable viewing position or to share content on the monitor with others.

Back
LG 34UC79G-B Back picture
Wall Mount : Vesa 100x100

The rear of the monitor looks good. All of the inputs are located out the back of the UC79G, and the rear of the stand provides a passage for cable management (shown here). There is a VESA mount for attaching to a stand.

Borders
LG 34UC79G-B Borders picture
Borders : 0.6" (1.4 cm)

The borders of this LG monitor have an average thickness but looks quite good.

Thickness
LG 34UC79G-B Thickness picture
Thickness (with stand) : 6.3" (15.9 cm)
Thickness (without stand) : 2.0" (5.2 cm)

The monitor has an average thickness when viewed from the side. Due to the curve, it appears to be a bit thicker (and this is included in the measurement).

7.5 Build Quality
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What it is: How well built and sturdy the monitor is, and how good the materials used to build it are.
When it matters: All usages.
Score components: Subjectively assigned
LG 34UC79G-B Build Quality picture

The build quality of the 34UC59G-B is good. Although almost entirely plastic, it feels good and movement is smooth.

The LG 34UC79G-B has a decent picture quality. Since this monitor has an IPS panel, dark room performance won't be excellent, as blacks tend to look more like grays than really blacks and black uniformity is disappointing. However, when the monitor is used in a bright environment like an office space, the perceived picture quality is much better. The luminance of the monitor and the screen finish are ordinary and should be enough to deal with the glare of normal office light, but might struggle a bit with a more direct source of lighting. Viewing angles are very good and picture quality will remain good even if you are looking at the monitor from sharp angle horizontally and vertically. The gray uniformity is great on the 34UC79G-B and dirty screen effect is not visible at all. Finally, this LG monitor as a decent accuracy out of the box and almost perfect once calibrated and the coverage of the sRGB color standard is very good.

6.6 Contrast
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What it is: Brightness difference between white and black. This is the main component of picture quality.
When it matters: Always, but especially when watching dark scenes.
Score components:
LG 34UC79G-B Checkerboard Picture
Native Contrast
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What it is: Ratio of the white brightness divided by the blacks measured on our checkerboard test pattern with a white target of 100 cd/m².
When it matters: Dark scenes in a dark room.
Good value: > 3,000
Noticeable difference: 500
:
1390 : 1
Contrast with local dimming
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What it is: Ratio of the white brightness divided by the blacks measured on our checkerboard test pattern with local dimming turned on (maximum) with a white target of 100 cd/m².
When it matters: Dark scenes in a dark room.
Good value: > 3,000
Noticeable difference: 500
:
N/A

The LG 34UC79G-B has a decent contrast ratio and is pretty good for an IPS monitor, and at almost 1400:1, this is more than both the LG 27UD68P-B and the LG 29UM69G-B. Even with this decent contrast ratio, dark room performance won't be as good as a monitor with a VA panel, but in a well-lit room, this monitor performance is great.

0 Local Dimming
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What it is: The lights behind the LCD layer adapt to the picture displayed, improving the contrast ratio.
When it matters: Dark scenes viewed in a dark room.
Score components: Subjectively assigned
Local Dimming
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What it is: Whether it has a feature that controls the LEDs behind the LCD layer, to match the picture and darkens the dark portion of it.
When it matters: On LED TVs only. Dark scenes viewed in a dark room.
:
No
Backlight
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What it is: Configuration of the lights of the backlight.
When it matters: Effectiveness of the local dimming.
Good value: Full-array/direct lighting is better for local dimming. As for the uniformity of the screen, it depends on the implementation. Some edge-lit monitors have more uniform blacks than some full-array monitors.
:
Direct

The LG 34UC79G-B does not have a local dimming feature. The video is for reference only.

6.5 SDR Peak Brightness
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What it is: How bright the screen can get. Measured with local dimming and with SDR content.
When it matters: Bright living rooms; bright objects; SDR content.
SDR Real Scene
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What it is: The maximum luminosity the TV can obtain while playing a movie or while watching a TV show. Our Real Scene was selected to represent a more regular movie condition. All measurements are made with the TV set to be as bright as possible, but with a 6500k white. Measured with local dimming on, max backlight and with an SDR signal. Scene: here.
When it matters: When watching movies and TV shows in SDR.
:
222 cd/m²
SDR Peak 2% Window
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What it is: The maximum luminosity, even if only maintained for a short time, of a white square covering 2% of the screen, with the monitor set to be as bright as possible. Measured with local dimming and over SDR signal.
When it matters: Bright highlights, present on screen for a short time
:
249 cd/m2
SDR Peak 10% Window
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What it is: The maximum luminosity, even if only maintained for a short time, of a white square covering 10% of the screen, with the monitor set to be as bright as possible. Measured with local dimming and over SDR signal.
When it matters: Bright objects, present on screen for a short time
:
249 cd/m2
SDR Peak 25% Window
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What it is: The maximum luminosity, even if only maintained for a short time, of a white square covering 25% of the screen, with the monitor set to be as bright as possible. Measured with local dimming and over SDR signal.
When it matters: When watching in a bright room.
:
249 cd/m2
SDR Peak 50% Window
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What it is: The maximum luminosity, even if only maintained for a short time, of a white square covering 50% of the screen, with the monitor set to be as bright as possible. Measured with local dimming and over SDR signal.
When it matters: When watching in a bright room.
:
249 cd/m2
SDR Peak 100% Window
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What it is: The maximum luminosity, even if only maintained for a short time, of a white square covering 100% of the screen, with the monitor set to be as bright as possible. Measured with local dimming and over SDR signal.
When it matters: When watching in a bright room.
:
249 cd/m2
SDR Sustained 2% Window
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What it is: The lowest maximum luminosity (usually after it has stabilized) of a white square covering 2% of the screen, with the monitor set to be as bright as possible. Measured with local dimming and over SDR signal.
When it matters: Bright highlights, persistent during a scene.
:
210 cd/m2
SDR Sustained 10% Window
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What it is: The lowest maximum luminosity (usually after it has stabilized) of a white square covering 10% of the screen, with the monitor set to be as bright as possible. Measured with local dimming and over SDR signal.
When it matters: Bright objects, persistent during a scene.
:
176 cd/m2
SDR Sustained 25% Window
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What it is: The lowest maximum luminosity (usually after it has stabilized) of a white square covering 25% of the screen, with the monitor set to be as bright as possible. Measured with local dimming and over SDR signal.
When it matters: When watching in a bright room.
:
190 cd/m²
SDR Sustained 50% Window
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What it is: The lowest maximum luminosity (usually after it has stabilized) of a white square covering 50% of the screen, with the monitor set to be as bright as possible. Measured with local dimming and over SDR signal.
When it matters: When watching in a bright room.
:
199 cd/m2
SDR Sustained 100% Window
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What it is: The lowest maximum luminosity (usually after it has stabilized) of a white square covering 100% of the screen, with the monitor set to be as bright as possible. Measured with local dimming and over SDR signal.
When it matters: When watching in a bright room.
:
199 cd/m2
SDR ABL
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What it is: The standard deviation of the SDR sustained brightness, after linearizing for noticeable differences in luminosity
When it matters: Content with large bright areas, such as for PC or video game use, and sports such as hockey
:
0.0

The 34UC79G-B's SDR peak brightness is ordinary. It's bright enough for most home environments, but those that use it in an office or room with lots of windows might find it a little dim.

0 HDR Peak Brightness
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What it is: How bright the screen can get. Measured with local dimming and with HDR content.
When it matters: HDR content
HDR Real Scene : N/A
HDR Peak 2% Window : N/A
HDR Peak 10% Window : N/A
HDR Peak 25% Window : N/A
HDR Peak 50% Window : N/A
HDR Peak 100% Window : N/A
HDR Sustained 2% Window : N/A
HDR Sustained 10% Window : N/A
HDR Sustained 25% Window : N/A
HDR Sustained 50% Window : N/A
HDR Sustained 100% Window : N/A
HDR ABL : N/A

HDR is not supported.

7.6 Horizontal Viewing Angle
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What it is: Color accuracy when viewed from the side.
LG 34UC79G-B Horizontal Color Shift Picture
Color Shift from Left
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What it is: Angle where the colors noticeable shift compared to when viewed from directly in front of the monitor. 0 ° means directly facing the monitor. Measurements are up to a maximum of 75 °.
When it matters: When sharing your monitor with people on your left
Good value: > 50°
Noticeable difference: 10°
:
42 °
Color Shift from Right
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What it is: Angle where the colors noticeable shift compared to when viewed from directly in front of the monitor. 0 ° means directly facing the monitor. Measurements are up to a maximum of 75 °.
When it matters: When sharing your monitor with people on your right
Good value: > 50°
Noticeable difference: 10°
:
46 °
LG 34UC79G-B Horizontal Brightness Picture
Brightness from Left
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What it is: Angle where the brightness drops to 50% of the brightness directly in front of the monitor. 0 ° means directly facing the monitor. Measurements are up to a maximum of 75 °.
When it matters: When sharing your monitor with people on your left.
Good value: > 50°
Noticeable difference: 10°
:
50 °
Brightness from Right
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What it is: Angle where the brightness drops to 50% of the brightness directly in front of the monitor. 0 ° means directly facing the monitor. Measurements are up to a maximum of 75 °.
When it matters: When sharing your monitor with people on your right.
Good value: > 50°
Noticeable difference: 10°
:
52 °
LG 34UC79G-B Horizontal Black Level Picture
Black Level from Left
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What it is: Angle where the black level drops to 50% of the black level directly in front of the monitor. 0 ° means directly facing the monitor. Measurements are up to a maximum of 75 °.
When it matters: When sharing your monitor with people on your right.
Good value: > 50°
Noticeable difference: 10°
:
75 °
Black Level from Right
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What it is: Angle where the black level drops to 50% of the black level directly in front of the monitor. 0 ° means directly facing the monitor. Measurements are up to a maximum of 75 °.
When it matters: When sharing your monitor with people on your right.
Good value: > 50°
Noticeable difference: 10°
:
75 °
Curve Radius : 3800 R

This ultrawide LG monitor has a good horizontal viewing angle. As is usual with IPS-type LCD monitors, the black level does not shift significantly when viewed from the sides giving the image a good contrast from all viewing positions. Its colors also remain quite accurate even at fairly steep angles.

7.8 Vertical Viewing Angle
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What it is: Color accuracy when viewed from the top or bottom.
LG 34UC79G-B Vertical Color Shift Picture
Color Shift from Below
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What it is: Angle where the colors noticeable shift compared to when viewed from directly in front of the monitor. 0 ° means directly facing the monitor. Measurements are up to a maximum of 75 °.
When it matters: When looking at a monitor from below.
Good value: > 50°
Noticeable difference: 10°
:
19 °
Color Shift from Above
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What it is: Angle where the colors noticeable shift compared to when viewed from directly in front of the monitor. 0 ° means directly facing the monitor. Measurements are up to a maximum of 75 °.
When it matters: When looking at a monitor when standing up.
Good value: > 50°
Noticeable difference: 10°
:
29 °
LG 34UC79G-B Vertical Brightness Picture
Brightness from Below
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What it is: Angle where the brightness drops to 50% of the brightness directly in front of the monitor. 0 ° means directly facing the monitor. Measurements are up to a maximum of 75 °.
When it matters: When looking at a monitor from below.
Good value: > 50°
Noticeable difference: 10°
:
29 °
Brightness from Above
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What it is: Angle where the brightness drops to 50% of the brightness directly in front of the monitor. 0 ° means directly facing the monitor. Measurements are up to a maximum of 75 °.
When it matters: When looking at a monitor while standing up.
Good value: > 50°
Noticeable difference: 10°
:
34 °
LG 34UC79G-B Vertical Black Level Picture
Black Level from Below
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What it is: Angle where the black level drops to 50% of the black level directly in front of the monitor. 0 ° means directly facing the monitor. Measurements are up to a maximum of 75 °.
When it matters: When looking at a monitor from below.
Good value: > 50°
Noticeable difference: 10°
:
75 °
Black Level from Above
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What it is: Angle where the black level drops to 50% of the black level directly in front of the monitor. 0 ° means directly facing the monitor. Measurements are up to a maximum of 75 °.
When it matters: When looking at a monitor while standing up.
Good value: > 50°
Noticeable difference: 10°
:
75 °

Very good vertical viewing angle. The 34UC79G-B performs better than average in this aspect and much like its horizontal viewing angle, its black level is maintained even when viewed from the sides. It does lose brightness a bit faster on this axis.

8.3 Gray Uniformity
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What it is: Evenness of colors onscreen (not just gray).
When it matters: Solid colors. Sports, panning shots.
Score components:
LG 34UC79G-B 50% Uniformity Picture
50% Std. Dev.
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What it is: Average squared difference of pixels when displaying a mid 50% gray.
When it matters: Solid colors. Sports, panning shots.
Good value: < 2.5%
Noticeable difference: 1%
:
3.641 %
50% DSE
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What it is: High-frequency variance of uniformity. Dark spots on the screen.
When it matters: Solid colors. Sports, panning shots.
Good value: < 0.165%
Noticeable difference: 0.025%
:
0.128 %
LG 34UC79G-B 5% Uniformity Picture
5% Std. Dev.
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What it is: Average squared difference of pixels when displaying a mid 5% gray.
When it matters: Dark scenes.
Good value: < 1.15%
Noticeable difference: 1%
:
0.518 %
5% DSE
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What it is: High-frequency variance of uniformity. Dark spots on the screen.
When it matters: Dark scenes.
Good value: < 0.116%
:
0.069 %

The gray uniformity of the LG 34UC79G-B is impressive. Beside both sides being a bit darker and the top edge a bit brighter, not much can be noticed, and particularly the dirty screen effect, which is not present at all. Note that some moiré is still visible, giving the look of a strange curve pattern, but this is only an effect on the camera sensor and not of the screen itself.

Looking at our 5% gray test picture, only the brighter top edge is visible and besides that nothing really come up.

4.8 Black Uniformity
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What it is: Evenness of blacks.
When it matters: Dark scenes viewed in a dark room.
Score components:
LG 34UC79G-B Native Black Uniformity Picture
Native Std. Dev.
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What it is: Average of the squared difference of the blacks.
When it matters: Dark scenes viewed in a dark room.
Good value: <2%
Noticeable difference: 1%, but keep in mind that it varies a lot by unit, even of the same model; yours likely will not end up exactly like ours.
:
2.782 %
Std. Dev. w/ L.D.
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What it is: Average of the squared difference of the blacks with Local Dimming enabled
When it matters: Dark scenes viewed in a dark room.
Good value: <2%
Noticeable difference: 1%, but keep in mind that it varies a lot by unit, even of the same model; yours likely will not end up exactly like ours.
:
N/A

The black uniformity of this monitor is poor. Most of the problems come from the backlight bleed from the top and bottom edge, the worse one being the top one, as the bleeding is also visible on the 5% gray test picture.

6.9 Pre Calibration
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What it is: Monitor's color accuracy before a full calibration. The measurements are taken with out of the box 'factory setting'.
When it matters: All video on an uncalibrated TV. This represents most people's use cases.
Score components:
LG 34UC79G-B Pre Calibration Picture LG 34UC79G-B Pre Gamma Curve Picture LG 34UC79G-B Pre Color Picture
Picture Mode
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What it is: The picture mode that was used to do the pre-calibration reading. We usually go for the picture mode that gives us the more control over all the picture quality setting.
:
Custom
Luminance
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What it is: The luminance at which the pre-calibration reading was done. This represents the luminance of the monitor when it is at the factory default settings.
:
828.9 cd/m2
Luminance Settings
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What it is: The luminance settings, often named 'Brightness' on monitors, usually range from 0 to 100.
:
100
Contrast Setting
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What it is: The monitor contrast setting, usually ranging from 0 to 100.
:
70
RGB controls
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What it is: This is the value for each color (red, green, and blue) used in the monitor internal RGB cuts/gains controls. If the monitor does not have an internal RGB cuts/gains controls, then the color temperature setting will be used instead, and the color temperature that gives us the best result will be used.
:
Custom 50-50-50
Color Temperature
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What it is: The color temperature is a measure of the color of light. A colder color temperature (7000K) will look bluer and a warmer color temperature (4000K) will look yellower/redder. 6500K is the standard color for PC monitors and also for the sRGB color standard.
When it matters: When you care about color reproduction and accuracy.
Good value: 6500K
Noticeable difference: 400K
:
6849 K
White Balance dE
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What it is: Average inaccuracy of shades of gray.
When it matters: Overall color temperature of all video.
Good value: < 3
Noticeable difference: 1
:
3.01
Color dE
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What it is: Average inaccuracy of colors.
When it matters: All colors.
Good value: < 3
Noticeable difference: 1
:
4.04
Gamma
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What it is: Brightness of shades of gray.
When it matters: Shadows.
Good value: Between 2.1 and 2.3 (our target is 2.2)
Noticeable difference: 0.1
:
2.26

This LG monitor has decent accuracy out of the box. The best measurements were done when the monitor was set on the 'Custom' 'Picture Mode', with the 'Color Temp' set to 'Custom' (default value 50 for each color), and the 'Gamma' set to 'Gamma 1'. For the gamma setting, we found that 'Gamma 1' was the best overall, but you could change it to other value to better match the content you are watching, and the overall accuracy won't change by that much.

The white balance and color dE are both in the range were most enthusiated would notice it, but it is still pretty good for most people. The gamma is not far from our target and the color temperature is not far from our desired 6500, which is good for people who find this aspect important.

9.5 Post Calibration
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What it is: Monitor's color accuracy after a full calibration with a spectrophotometer.
When it matters: All graphics and video content on a monitor that has been professionally calibrated.
Score components:
LG 34UC79G-B Post Calibration Picture LG 34UC79G-B Post Gamma Curve Picture LG 34UC79G-B Post Color Picture
Picture Mode
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What it is: The picture mode that was used to do the calibration reading. We usually go for the picture mode that gives us the more control over all the picture quality setting.
:
Luminance
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What it is: The luminance at which the calibration was executed. We aim for a luminance level of 100 cd/m².
:
99.3 cd/m2
Luminance Settings
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What it is: The luminance settings, often named 'Brightness' on monitors, usually range from 0 to 100.
:
1
Contrast Setting
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What it is: The monitor contrast setting, usually ranging from 0 to 100.
:
70
RGB controls
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What it is: This is the value for each color (red, green, and blue) used in the monitor internal RGB cuts/gains controls. If the monitor does not have an internal RGB cuts/gains controls, then the color temperature setting will be used instead, and the color temperature that gives us the best result will be used.
:
49-51-44
Color Temperature
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What it is: The color temperature is a measure of the color of light. A colder color temperature (7000K) will look bluer and a warmer color temperature (4000K) will look yellower/redder. 6500K is the standard color for PC monitors and also for the sRGB color standard.
When it matters: When you care about color reproduction and accuracy.
Good value: 6500K
Noticeable difference: 400K
:
6403 K
White Balance dE
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What it is: Average inaccuracy of shades of gray.
When it matters: Overall color temperature of all videos.
Good value: < 3
Noticeable difference: 1
:
0.72
Color dE
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What it is: Average inaccuracy of colors.
When it matters: All colors.
Good value: < 3
Noticeable difference: 1
:
0.81
Gamma
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What it is: Brightness of shades of gray.
When it matters: Shadows.
Good value: Between 2.1 and 2.3 (our target is 2.2)
Noticeable difference: 0.1
:
2.18

The post-calibration accuracy is excellent for the 34UC79G. The calibration was done under the same picture mode as the pre-calibration was done, the 'custom Color' picture mode. The overall post calibration is great, and both the white balance and color dE were brought down considerably, to now being under 1.0, which is the level at which most people can't notice the imperfection. The color temperature is now a bit closer to our desired target of 6500k. The gamma tracks our target curve much closely too, and the value is very close to our 2.2 target.

You can download our ICC profile calibration here.

8.2 SDR Color Gamut
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What it is: The palette of colors the monitor can display
When it matters: General content consumption or production
Score components:
LG 34UC79G-B Color Gamut s.RGB Picture
s.RGB xy
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What it is: Coverage of the s.RGB colorspace on CIE 1931 xy.
When it matters: Almost all content. Includes websites, standard windows environment and SDR movies
Good value: > 95%
Noticeable difference: 5%
:
94.5 %
LG 34UC79G-B Color Gamut ARGB Picture
Adobe RGB xy
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What it is: Coverage of the Adobe RGB colorspace on CIE 1931 xy.
When it matters: Professional photography.
Good value: > 90%
Noticeable difference: 5%
:
69.5 %

This ultrawide monitor does a good job covering the s.RGB colorspace used with most applications. Unfortunately, though, its coverage of the wider Adobe is quite limited and won't satisfy users that require it for professional graphic or print applications.

8.0 SDR Color Volume
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What it is: How much of the SDR color spaces the monitor can reproduce
When it matters: General usage and SDR media creation
Score components:
LG 34UC79G-B s.RGB Color Volume ITP picture
s.RGB in ICtCp
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What it is: How much of the s.RGB colorspace a monitor can display at different luminosity levels
When it matters: Most content, including web, SDR video games, and SDR media creation
:
88.5 %
LG 34UC79G-B Adobe RGB Color Volume ITP Picture
Adobe RGB in ICtCp
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What it is: How much of the Adobe RGB colorspace a monitor can display at different luminosity levels, normalized to the monitor's peak brightness.
When it matters: Professional media creation
:
72.0 %

The LG 34UC79G has a good SDR color volume thanks to its higher contrast than usual for an IPS-type LCD monitor. Due to its limited coverage of the Adobe RGB colorspace, however, its respective volume remains a bit limiting for those that need it.

0 HDR Color Gamut
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What it is: The monitor's ability to reproduce HDR color spaces
When it matters: HDR content consumption or media creation
Score components:
Wide Color Gamut
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What it is: Whether the monitor can support wider color gamuts
When it matters: HDR content and media creation
:
No
DCI P3 xy
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What it is: Coverage of the DCI P3 colorspace on CIE 1931 xy
When it matters: When consuming or producing HDR content.
:
N/A
Rec. 2020 xy
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What it is: Coverage of the Rec.2020 colorspace on CIE 1931 xy.
When it matters: When consuming or producing HDR content.
Good value: > 90%
Noticeable difference: 5%
:
N/A

HDR is not supported.

0 HDR Color Volume
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What it is: How much of the HDR color spaces a monitor can display at different luminosity levels.
When it matters: HDR content consumption and production. Includes streaming services, UHD Blu-rays and HDR games.
Score components:
DCI-P3 in ICtCp
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What it is: How much of the DCI-P3 colorspace a monitor can display at different luminosity levels, normalized to the monitor's peak brightness output.
When it matters: HDR content.
Good value: 80%
Noticeable difference: 5%
:
N/A
Rec. 2020 in ICtCp
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What it is: How much of the Rec. 2020 colorspace a monitor can display at different luminosity levels, normalized to the monitor's peak brightness output.
When it matters: HDR content.
Good value: 80 %
Noticeable difference: 5 %
:
N/A

HDR is not supported.

10 Image Retention
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What it is: How much a static image is retained on a monitor screen after a certain amount of time.
When it matters: When working or playing video games on your PC monitor.
LG 34UC79G-B Image Retention Picture
IR after 0 min recovery
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What it is: Image retention measured right after the static image exposure, without recovery time.
When it matters: When changing use or right after changing the type of on screen content (i.e. stopping playing video game to watch a movie).
Good value: 0 is perfect.
Noticeable difference: 0.015%
:
0 %
IR after 2 min recovery
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What it is: Image retention measured after a recovery time of 2 minutes.
When it matters: When changing use or right after changing the type of on screen content (i.e. stopping playing video game to watch a movie).
Good value: 0 is perfect
Noticeable difference: 0.015%
:
0 %
IR after 4 min recovery
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What it is: Image retention measured after a recovery time of 4 minutes.
When it matters: When changing use or right after changing the type of on screen content (i.e. stopping playing video game to watch a movie).
Good value: 0 is perfect.
Noticeable difference: 0.015%
:
0 %
IR after 6 min recovery
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What it is: Image retention measured after a recovery time of 6 minutes.
When it matters: When changing use or right after changing the type of on screen content (i.e. stopping playing video game to watch a movie).
Good value: 0 is perfect.
Noticeable difference: 0.015%
:
0 %
IR after 8 min recovery
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What it is: Image retention measured after a recovery time of 8 minutes.
When it matters: When changing use or right after changing the type of on screen content (i.e. stopping playing video game to watch a movie).
Good value: 0 is perfect.
Noticeable difference: 0.015%
:
0 %
IR after 10 min recovery
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What it is: Image retention measured after a recovery time of 10 minutes.
When it matters: When changing use or right after changing the type of on screen content (i.e. stopping playing video game to watch a movie).
Good value: 0 is perfect.
Noticeable difference: 0.015%
:
0 %

Perfect result for the image retention test for this LG monitor, as no image retention could be noticed at all while running our test.

7.0 Reflections
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What it is: How much light is reflected by the TV.
When it matters: Bright rooms.
Score components: Subjectively assigned
LG 34UC79G-B Average room LG 34UC79G-B Average room off picture LG 34UC79G-B Bright room off picture

The reflection handling of the 34UC79G is decent. It has a very light-matte finish which only somewhat diffuses the reflection across the screen. Overall, it's a bit worse than most other monitors we've tested but should be fine for an average-lit room. In a bright room, the reflections are a bit distracting though.

8.3 Gradient
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What it is: How finely levels of color can be displayed.
When it matters: Details in shadows, sky and skin tones. Matters more for HDR content.
Score components: Subjectively assigned
LG 34UC79G-B Gradient Picture
Color Depth
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What it is: Number of bits per pixel to represent a specific color. Note: we consider 8-bit with dithering to be equivalent to 10-bit, as long as the 10-bit gradient looks smooth.
When it matters: HDR content like HDR video games or HDR UHD movies. Won't matter for regular Blu-ray movies, SDR video game or desktop environment content displayed from a Windows PC. Those are limited to 8-bit color.
Good value: 10-bit.
Noticeable difference: 1 bit.
:
8 Bit

Great performance at displaying out gradient test image for this LG monitor. Besides the 8-bit banding due to the limits of this monitor, only small color shades issues are visible in the very dark color. Overall, this is a very good result.

10 Color Bleed
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What it is: How much the color from one area of the screen affects the color in another area of the screen.
When it matters: All usages, but especially media creation.
Score components:
LG 34UC79G-B Color bleed horizontal
Pixel row error
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What it is: The amount of bleed that appears across the screen horizontally.
When it matters: General usage of a PC monitor, can appear when browsing the web or with media creation like graphics.
Good value: <0.2%
Noticeable difference: 0.1%
:
0.000 %
LG 34UC79G-B Color bleed vertical
Pixel column error
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What it is: Amount of color bleeding that appears across the screen vertically.
When it matters: Most uses of a PC monitor. Can appear while browsing the web or when editing images or graphics.
Good value: <0.2%
Noticeable difference: 0.1%
:
0.000 %

The LG 34UC79G-B does not produce any color bleed which is great for those that often work with uniformly colored graphics.

9.1

Motion

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Score components:

Motion looks excellent on the LG 34UC79G. This monitor's got it all: a fast pixel response time, a flicker-free backlight, a very high refresh rate, FreeSync variable refresh rate technology, and optional black frame insertion. Many monitors have a faster response time, but few offer this complete a package of motion features.

8.8 Motion Blur
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What it is: The performance of the pixel response time. Poor response time causes trails to follow moving objects. Response time is one of a few sources of motion blur.
When it matters: When there's fast movement on screen, such as during video games and sports.
Score components:
LG 34UC79G-B Motion Blur Picture LG 34UC79G-B Response Time Chart
80% Response Time
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What it is: How quickly pixels can reach 80% of a full transition from one color to another.
When it matters: When there's fast movement on screen, such as during video games and sports.
Good value: < 8 ms
Noticeable difference: 4 ms
:
4.6 ms
100% Response Time
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What it is: How quickly pixels can fully transition from one color to another.
When it matters: When there's fast movement on screen, such as during video games and sports.
Good value: < 20 ms
Noticeable difference: 10 ms
:
13.5 ms
Best Overdrive Setting
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What it is: If the monitor has adjustable pixel overdrive settings, which one produces the best response time with minimal overshoot.
When it matters: When adjusting the monitor's settings to get the least possible motion blur.
:
Normal

Response Time Off
Response Time Slow
Response Time Normal
Response Time Fast

Very good response time, good enough for watching fast moving content. Most of the blur in the photo is due to persistence; only a short ghosting trail can be seen following the moving logo. The 'Response Time Normal' setting was the most balanced; the 'Fast' setting was faster overall but introduced more overshoot. Most people will be better served by the 'Normal' setting, but those who don't mind overshoot artifacts may prefer 'Fast'.

9.2 Image Flicker
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What it is: Luminosity pattern when displaying images
When it matters: Nearly all the time during PC monitor use, but especially during fast movement such as video games
LG 34UC79G-B Backlight Picture
Flicker-free : Yes
PWM Dimming Frequency
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What it is: Flickering pattern at different luminosities.
When it matters: For people sensitive to flickering.
Good value: N/A or high frequencies (> 300 Hz). Frequencies that are multiples of 60Hz are better.
:
0 Hz
Black Frame Insertion (BFI)
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What it is: Option to turn screen black between frames
When it matters: Reduces eye tracking blur in motion
Good value: Yes
:
Yes
LG 34UC79G-B BFI Picture LG 34UC79G-B BFI Frequency Picture
BFI Maximum Frequency
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What it is: Highest possible frequency of flickering pattern
When it matters: Reduces eye-tracking blur in motion
Good value: Matches the native refresh rate
Noticeable difference: 20 Hz
:
144 Hz
BFI Minimum Frequency
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What it is: Lowest possible frequency of flickering pattern
When it matters: Reduces eye-tracking blur in motion
Good value: 60 Hz
Noticeable difference: 20 Hz
:
100 Hz

34UC79G has a flicker-free backlight at all brightness levels, which is great. It can also add optional flicker for use as Black Frame Insertion to clear up motion, as seen in the BFI photo, using its '1ms Motion Blur Reduction' feature; however, this only improves motion when the framerate of the content matches the flicker rate exactly, or else you will see double image artifacts.

9.2 Refresh Rate
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What it is: How frequently the monitor can refresh and show new frames, and whether it can vary its refresh rate in real time using technologies like G-sync and FreeSync.
When it matters: Mostly for gaming, but does provide a little better motion during normal usage.
Native
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What it is: The frequency at which the monitor is capable of displaying images every second
When it matters: General usage, but better results are most important for gaming
Good value: >100 Hz
Noticeable difference: 15 Hz
:
144 Hz
Factory Overclock
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What it is: The frequency at which the monitor's can be boosted to using its internal menu.
When it matters: Gaming and other usages where high frame rate content is consumed.
Good value: >100
Noticeable difference: 15
:
N/A
Variable Refresh Rate
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What it is: Feature that allows the monitor to synchronize its refresh rate with the input device's output and reduces stuttering and screen tearing.
When it matters: Almost every usage, but is most noticeable in gaming where constant fluctuation in framerate cause distracting artifacts.
:
FreeSync
VRR Maximum
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What it is: The maximum frequency covered by the Variable Refresh Rate feature of the monitor.
When it matters: Any time the VRR feature is enabled.
Good value: Matches Refresh rate
Noticeable difference: 10 Hz
:
144 Hz
VRR Minimum
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What it is: The lowest frequency covered by the monitor's Variable Refresh Rate feature.
When it matters: When using the VRR feature of the monitor at lower frame rates.
Good value: 30 Hz
:
< 20 Hz
VRR Maximum With OC
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What it is: The maximum frequency covered by the Variable Refresh Rate feature when the monitor's overclocking feature is used.
When it matters: When both the overclocking and VRR features are used.
Good value: Matching the overclocked refresh rate.
Noticeable difference: 10 hz
:
N/A
VRR Supported Connectors : DisplayPort

Very high native refresh rate with a great FreeSync range. The monitor's native FreeSync range (50-144 Hz) is wide enough for the graphics card's Low Frequency Compensation (LFC) feature to work, sending double or triple frames when the framerate drops below 50 Hz to effectively extend the range below 20 Hz. Gamers will be very pleased with this monitor's FreeSync.

8.9

Inputs

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Score components:

The monitor's standout feature is its ultrawide aspect ratio, which makes it great for gaming and productivity; but its mediocre 1080 pixels high resolution makes it not well suited for usages that don't take advantage of the extra width, like video watching or web browsing. The monitor's excellent low input lag also makes it well suited for gaming, though it does benefit other usages as well.

9.5 Input Lag
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What it is: Delay between input and onscreen reaction.
When it matters: General usage of the mouse and gaming.
Native Resolution
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What it is: Lowest input lag possible at the center of the screen, when the monitor is displaying its native resolution at its native refresh rate.
When it matters: General usage and while playing video games.
Good value: < 15 ms
Noticeable difference: 5 ms
:
4.1 ms
Non-Native Resolution
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What it is:

Lowest input lag possible at the center of the screen, when the monitor is displaying an alternative resolution at its native refresh rate. The non-native resolution tested depends on the native resolution of the monitor, following this pattern unless otherwise specified in the Input Lag text:

Native Resolution Non-Native Resolution Tested
4k UHD QHD
QHD FHD
FHD 1600x900
3440x1440 2560x1080
2560x1080 1920x1080
When it matters: General usage as well as gaming.
Good value: < 15 ms
Noticeable difference: 5 ms
:
N/A
Native Resolution @ 60 Hz
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What it is: Lowest input lag possible at the center of the screen, when the monitor is displaying its native resolution at a refresh rate of 60 Hz.
When it matters: General usage as well as gaming.
Good value: < 15 ms
Noticeable difference: 5 ms
:
9.3 ms
Variable Refresh Rate
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What it is: Lowest input lag possible at the center of the screen, when the monitor is using its Variable Refresh Rate feature at its native resolution.
When it matters: General usage as well as gaming.
Good value: < 15 ms
Noticeable difference: 5 ms
:
4.8 ms
HDR
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What it is: Lowest input lag possible at the center of the screen, when the monitor is displaying an HDR signal at its native resolution and refresh rate.
When it matters: General usage as well as gaming.
Good value: < 15 ms
Noticeable difference: 5 ms
:
N/A
Black Frame Insertion (BFI)
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What it is: Lowest input lag possible at the center of the screen, when BFI is enabled and the monitor is displaying a signal at the highest supported BFI refresh rate.
When it matters: General usage as well as gaming.
Good value: < 15 ms
Noticeable difference: 5 ms
:
8.2 ms

BFI frequency tested: 144 Hz

Excellent low input lag. The FreeSync input lag is just as low as at native refresh rate, as expected, and the 60 Hz input lag is similar to 60 Hz monitors. Unfortunately, no non-native resolutions supported 144 Hz operation, though this can be avoided if the graphics card does upscaling before sending to the monitor, which is common.

8.0 Resolution and Size
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What it is: The number of pixels the monitor can display, and the surface area of its screen.
When it matters: All usages, but especially for office and media editing.
Score components:
Native Resolution : 2560 x 1080
Aspect Ratio : 21:9
Megapixels : 2.8 MP
Pixel Density : 82 PPI
Screen Diagonal : 34.0 inches
Screen Area : 412 sq inches

The monitor has an ultrawide 21:9 aspect ratio, which makes it wider but not as tall as other 34" monitors. It also has a 1080 pixels high resolution, which is mediocre considering the monitor's large size and gives a poor pixel density. This means the monitor is only well suited for use cases that benefit from the ultrawide aspect ratio, like gaming and productivity, but is worse than a 1440p 16:9 monitor for other use cases like video watching or web browsing.

Main Inputs
Other Inputs

All of the inputs are located on the rear of the monitor.

Total Inputs
DisplayPort : 1 (DP 1.2)
Mini DisplayPort : No
HDMI : 2 (HDMI 2.0)
DVI : No
VGA : No
DisplayPort Out : No
USB : 2 (USB 3.0)
USB C : No
Analog Audio Out 3.5mm : 2
Microphone In 3.5mm : No
Digital Optical Audio Out : No
Analog Audio Out RCA : No

One of the 3.5mm analog audio ports is a headphone port with volume control, while the other is a simple line out at a fixed volume.

Features

The monitor has a well organized on-screen display (OSD) that is easily navigated with the joystick on the monitor's bottom edge. The OSD has all the typical monitor features like adjustable image, color and overdrive settings, but also has an optional crosshair overlay for gaming and optional quick charge for the USB ports.

Additional Features
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What it is: Additional features found on the monitor
Score components:
Speakers
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What it is: Whether or not the monitor features standalone speakers.
When it matters: When using your computer without headphones or a dedicated pair of speakers.
:
No
HDR10 : No

Like many gaming monitors, the 34UC79G-B can overlay a crosshair in the middle of the screen, which is useful for games that don't have crosshairs. There is also a quick charge option for the USB ports on the back of the monitor.

On-Screen Display (OSD)
Controls
LG 34UC79G-B Controls picture

The monitor's only physical button is a joystick on the bottom edge, like many LG monitors and TVs. This joystick is actually very intuitive to use and makes it easy to navigate the monitor's OSD.

In The Box
LG 34UC79G-B In The Box picture

  • Manual and drivers
  • Calibration report
  • Power brick and cable
  • Displayport cable
  • HDMI cable
  • Cable management clip

Conclusion
SEE PRICE
Amazon.com

7.5Mixed Usage
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Score components:
  • 30% Office
  • 30% Multimedia
  • 25% Gaming
  • 10% Media Creation
  • 5% HDR Gaming
The LG 34UC79G-B is a good monitor for a mixed usage. Its wide viewing angle, decent picture quality, and high refresh rate make it a versatile display that works well in many environments. Its ultrawide aspect ratio is particularly useful for productive environments and makes for a very immersive gaming experience.
Good monitor for usage in an office. While its stand doesn't offer the largest range of adjustments, its very wide viewing angle and wide aspect ratio makes it particularly useful for a more productive use. It does get decently bright, but the 34UC79G-B might have issues dealing with the reflections coming from a source placed directly in front of it.
Great monitor for playing video games. The 34UC79G-B's low input lag, high refresh rate and large FreeSync range make it a great choice for enjoying a responsive and fluid gaming experience. Its ultrawide aspect ratio is particularly great for more casual games as it makes the experience quite immersive.
Good monitor for consuming a variety of media. Its ultrawide aspect ratio is particularly well suited for theatrical movies since it can remove the letterboxing almost entirely. Its resolution could be a bit higher though, and its overall picture quality isn't stellar. It does not support HDR or wide color gamuts either, limiting it a little further.
Decent monitor for creating media. Its wide viewing angles ensure that its colors remain accurate from normal viewing positions. Its minimal curve also introduces minimal distortion making it less problematic for photographers. Unfortunately, it does lack support for modern wide gamuts as well as HDR, and its resolution can be a little limiting.
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Questions & Answers

1 ANSWERED QUESTIONS
0
You guys set the monitor's brightness to 1 for the Post Calibration or is that a typo?
The brightness setting is indeed set to 1. Feel free to set it as bright as you find comfortable, since it does not alter the calibration. Setting it to 1 matches our 100 cd/m2 target, but many find this too dark for their usage.
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