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Reviewed on May 11, 2015

LG LF6100
TV REVIEW

Usage Ratings - Version 1.0
6.3
Mixed Usage
Value for price beaten by
: Not at the latest test bench
6.2
Movies
6.7
TV Shows
6.7
Sports
6.6
Video Games
5.0
HDR Movies
3.8
HDR Gaming
5.2
PC Monitor
Type : LED
Resolution : 1080p
Refresh Rate : 60 Hz

The LG LF6100 LED TV has great contrast and black uniformity, so it is a good TV for movies or TV shows. However, its motion blur and high input lag prevent it from being a good gaming TV.

Test Results
Design 8.0
Picture Quality 6.8
Motion 6.3
Inputs 5.4
Sound Quality 6.4
Smart Features 6.0
Pros
  • Great contrast ratio.
  • Minimal reflection.
Cons
  • High input lag.
  • More motion blur than average.
  • Limited viewing angle.

Check Price

8.0

Design

Curved : No
Stand

You will need a wide table to accommodate this TV, because the stand has a foot on either end. Our 50" had a footprint of 40.5" x 10".

Borders
Borders : 0.59" (1.5 cm)

Thickness
Max Thickness : 2.04" (5.2 cm)

6.8

Picture Quality

8.7 Contrast
Native Contrast
:
4833 : 1

The native contrast ratio is really great - the best we've tested so far this year.

0 Local Dimming
Local Dimming
:
No
Backlight
:
Direct

5.6 SDR Peak Brightness
SDR Peak 2% Window
:
217 cd/m2
SDR Peak 50% Window
:
217 cd/m2

6.9 Gray Uniformity
50% Std. Dev.
:
3.476 %
50% DSE
:
0.206 %

Unfortunately, the gray uniformity isn't as good as the black. The corners are darker and the screen has a few small dark patches all across the screen.

4.3 Viewing Angle
LCD Type
:
VA
Color Shift
:
20 °
Brightness
:
30 °
Black Level
:
21 °

This LG has a VA panel, which means the color shifts when you watch the TV at an angle. The blacks are also not as great off-axis.

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.

9.3 Black Uniformity
Native Std. Dev.
:
0.802 %

The black uniformity is great on this TV. No clouding or flashlighting at all.

8.7 Pre Calibration
White Balance dE
:
2.50
Color dE
:
2.0063
Gamma
:
2.15

9.8 Post Calibration
White Balance dE
:
0.21
Color dE
:
0.6284
Gamma
:
2.21

8.0 480p Input

This TV has no problem upscaling DVDs. The picture stays sharp, even when 'Noise Reduction' is turned on.

8.0 720p Input

Cable TV after upscaling looks good.

10 1080p Input

Blu-rays and other 1080p content looks great.

0 4k Input

6.7 Color Gamut
Wide Color Gamut
:
No
DCI P3 xy
:
73.82 %
DCI P3 uv
:
80.73 %
Rec 2020 xy
:
52.94 %
Rec 2020 uv
:
60.13 %

8.0 Reflections
Reflection
:
1.8 %
Screen Finish
:
Semi-gloss

The reflection on this LG LF6100 is average. You can have a few lights on without problem.
It doesn't get very bright, so it isn't the best TV if you have a lot of windows in your room.

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

Pixels
6.3

Motion

6.7 Motion Blur
Response Time
:
24.2 ms
Overshoot
:
0.2 ms

The length of the motion blur trail is long. It isn't an issue for movies or TV shows, but it could be for sports or playing video games.

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

It is a 60Hz TV with motion interpolation. It also supports 24p playback (which means no judder in movies when sent over a 24Hz input). However, it cannot do a 3:2 reverse pulldown.

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

5.4

Inputs

5.9 Input Lag
1080p @ 60Hz
:
49.7 ms
1080p With Interpolation
:
149.9 ms
1080p @ 60Hz Outside Game Mode
:
149.8 ms
1080p @ 60Hz @ 4:4:4
:
59.8 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

The input lag of the LG LF6100 is 49.7 ms under game mode. Labeling the input as PC increases the lag to 59.8 ms. The rest of the modes have a really high input lag 149.8 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

Label the input as PC to enable chroma 4:4:4.

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.

6.3 Frequency Response
Std. Dev. @ 70
:
4.39 dB SPL
Std. Dev. @ 80
:
5.12 dB SPL
Std. Dev. @ Max
:
6.75 dB SPL
Max
:
85.3 dB SPL
Low-end Cutoff
:
95 Hz

This TV doesn't get loud, but the low-end cut off is decent. The frequency response is good at lower volumes, but it suffers as the volume increases. Pumping may be present.

6.5 Total Harmonic Distortion
Distortion @ 70
:
0.022
Distortion @ 80
:
0.047
Distortion @ Max
:
0.042

Acceptable distortion level throughout the range, but the TV doesn't get loud.

6.0

Smart Features

Smart OS : Basic
Remote
Remote : Basic

The basic remote isn't great for using the smart features, but it does the job.

Misc
Power Consumption : 44 W
Power Consumption (Max) : 79 W
Firmware : 03.00.13

Conclusion
SEE PRICE
Amazon.com

6.3 Mixed Usage
The LG LF6100 LED TV has about the same picture quality as the cheaper LF6000, but it adds motion interpolation (up to 60Hz) and smart features. The contrast ratio and black uniformity are great, but it has too much motion blur and high input lag. It is a good TV for movies and TV shows, though.

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