Reviewed on May 13, 2015

LG LF5800 TV REVIEW

Usage Ratings - Version 1.0
6.1
Mixed Usage
Value for price beaten by
: Not at the latest test bench
5.2
Movies
6.7
TV Shows
6.8
Sports
6.4
Video Games
4.6
HDR Movies
3.6
HDR Gaming
5.5
PC Monitor
Type : LED
Resolution : 1080p
Refresh Rate : 60 Hz

The LG LF5800 is not a good TV. It has a good viewing angle, but nearly every other aspect of the picture quality is below average. It has poor blacks in a dark room and reflects too much light in a bright room.

Test Results
Design 8.0
Picture Quality 6.2
Motion 7.5
Inputs 5.4
Sound Quality 6.4
Smart Features 6.0
Pros
  • Good color accuracy off-axis.
Cons
  • Poor blacks.
  • Significant amount of reflection.

Check Price

8.0

Design

Curved : No
Stand

It has a stand as wide as the TV itself, which requires a wide table. Our 42" model had a footprint of 36" by 8.5".

Borders
Borders : 0.63" (1.6 cm)

Thickness
Max Thickness : 2.13" (5.4 cm)

6.2

Picture Quality

5.9 Contrast
Native Contrast
:
929 : 1

As with a lot of LG TVs, the contrast ratio is sub-par. When you have the lights off, the black color appears gray.

0 Local Dimming
Local Dimming
:
No
Backlight
:
Direct

5.7 SDR Peak Brightness
SDR Peak 2% Window
:
219 cd/m2
SDR Peak 50% Window
:
219 cd/m2

5.6 Gray Uniformity
50% Std. Dev.
:
4.503 %
50% DSE
:
0.266 %

The corners are darker than the center of the screen. Also, the top and bottom edge are brighter than the rest.

6.4 Viewing Angle
LCD Type
:
IPS
Color Shift
:
23 °
Brightness
:
34 °
Black Level
:
75 °

The main upside of the LG LF5800 is its wide viewing angle. You need to sit at a very wide angle to notice discoloration.

Update 01/06/2017: We have changed the methodology of testing. Since this is an old TV which we don't have anymore, we extrapolated the results from 2016 TVs.

6.3 Black Uniformity
Native Std. Dev.
:
2.447 %

The top and bottom border is brighter in dark scenes. Our unit also had a spot of clouding on the right side.

7.4 Pre Calibration
White Balance dE
:
5.61
Color dE
:
3.8138
Gamma
:
2.07

9.7 Post Calibration
White Balance dE
:
0.19
Color dE
:
0.8300
Gamma
:
2.21

8.0 480p Input

DVDs and SD content looks good on this TV, without the soft look found on the similar LG LF5600.

8.0 720p Input

720p content, like cable TV also look good once upscaled.

10 1080p Input

1080p content like Blu-ray look good on this TV.

0 4k Input

6.6 Color Gamut
Wide Color Gamut
:
No
DCI P3 xy
:
74.10 %
DCI P3 uv
:
79.90 %
Rec 2020 xy
:
52.37 %
Rec 2020 uv
:
58.26 %

6.5 Reflections
Reflection
:
1.9 %
Screen Finish
:
Semi-gloss

The LG 42LF5800 reflects a lot of light. Bright objects also have a rainbow glare around them.
It also doesn't get very bright, so it's a poor choice in a room with windows.

0 3D
3D
:
No
3D Type
:
No

Pixels
7.5

Motion

8.3 Motion Blur
Response Time
:
13.6 ms
Overshoot
:
5.0 ms

The transition of the pixels overshoots, creating a whiter trail behind moving objects. At least this shortens the length of the motion blur trail.

2.8 Image Flicker
PWM Dimming Frequency
:
120 Hz
BFI
:
No
BFI Frequency
:
120 Hz
BFI In Game Mode
:
No

7.1 24p Playback
Judder-free 24p
:
Yes
Judder-free 24p via 60p
:
No
Judder-free 24p via 60i
:
No

There is no judder in movies when watching them over 24p (Blu-ray players usually). However, it cannot do the reverse 3:2 pulldown. Also, it is only a 60hz, but at least it has motion interpolation.

5.0 Motion Interpolation
Motion Interpolation (30 fps)
:
Yes
Motion Interpolation (60 fps)
:
No

5.4

Inputs

5.9 Input Lag
1080p @ 60Hz
:
49.6 ms
1080p With Interpolation
:
149.7 ms
1080p @ 60Hz Outside Game Mode
:
149.8 ms
1080p @ 60Hz @ 4:4:4
:
59.9 ms
4k @ 60Hz
:
N/A
4k @ 60Hz @ 4:4:4
:
N/A
4k @ 60Hz + HDR
:
N/A
4k @ 60Hz @ 4:4:4 + 8 bit HDR
:
N/A

If you play video games, set the mode to Game to get input lag of 49.6 ms. To get chroma 4:4:4, you will need to set the label of the input to PC. Note that doing so increases the lag to 59.9 ms.

2.0 Supported Resolutions
1080p @ 60Hz @ 4:4:4
:
Yes
1080p @ 120Hz
:
No
4k @ 30Hz @ 4:4:4
:
No
4k @ 60Hz
:
No
4k @ 60Hz @ 4:4:4
:
No

Set the label of the HDMI input to PC to enable chroma 4:4:4 subsampling.

Side Inputs
Rear Inputs
Total Inputs
HDMI : 3
USB : 3
Digital Optical Audio Out : 1
Analog Audio Out 3.5mm : 0
Analog Audio Out RCA : 0
Component In : 1 (shared)
Composite In : 1 (shared)
Tuner (Cable/Ant) : 1
Ethernet : 1
DisplayPort : 0
IR In : 0
SD/SDHC : 0

Inputs Specifications
HDR10
:
No
Dolby Vision
:
No
5.1 Passthrough ARC Dolby Digital
:
Yes
5.1 Passthrough ARC DTS
:
Yes
5.1 Passthrough Optical Dolby Digital
:
Yes
5.1 Passthrough Optical DTS
:
Yes
HDMI 2.0 Full Bandwidth : No
ARC : Yes (HDMI 1)
USB 3 : No
HDCP 2.2 : No
CEC : Yes
MHL : Yes (HDMI 3)
Variable Analog Audio Out : No

6.4

Sound Quality

Note: Sound Quality test for TVs reviewed before 2017 was performed at 75dB, 85dB, and Max SPL. Starting 2017, the target SPL levels have been changed to 70dB, 80dB, and Max dB SPL.

6.0 Frequency Response
Std. Dev. @ 70
:
5.17 dB SPL
Std. Dev. @ 80
:
6.10 dB SPL
Std. Dev. @ Max
:
7.35 dB SPL
Max
:
85.6 dB SPL
Low-end Cutoff
:
95 Hz

Poor frequency response which gets even worse under heavy load. It doesn't get loud, either. The low-end cut off, however, is decent for a TV.

7.4 Total Harmonic Distortion
Distortion @ 70
:
0.014
Distortion @ 80
:
0.016
Distortion @ Max
:
0.021

Good distortion levels all around, and there's not a significant increase under heavy load. But the TV doesn't get loud.

6.0

Smart Features

Smart OS : Basic
Remote
Remote : Basic

The remote included in the box is basic, which makes navigating the smart features a bit cumbersome.

Misc
Power Consumption : 38 W
Power Consumption (Max) : 67 W
Firmware : 03.00.13

6.1 Mixed Usage

The LG LF5800 is very similar to the cheaper LF5600. The picture quality is about the same, but it adds 60hz motion interpolation, smart features and better upscaling. However, it still isn't a good TV. In a dark room, the blacks are gray, and in a bright room, it reflects too much light. At least the colors stay true off-axis.

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