Here's an LG G3, Korean LG-F400K display measurements ran today with my spectrophotometer and my in-house program

Issues encountered:

Luminance curves: shadows are too bright, upper mids and highlights are too dark.

Too much blue and green (or not enough red), getting bluer in shadows and extreme highlights

Contrast ratio measured at 718:1 on this unit.
Max brightness gets to 332cd/m², however outdoor readability seems still okay.
When the device get warm, it reduces maximum brightness.

As usual, the manufacturer tries to compensate for a misplaced white point by boosting color saturation, introducing even more color rendering inaccuracies.
The saturation boost also tries to compensate the washed out appearance due to inadequate gamma curves but the results is not subjectively not looking nice.

Examples of boosted saturation introducing visible clipping and loss of details:
75% saturated magenta gets +21.5% = 96.5% saturation.
81% saturated green gets +16% = 97% saturation.

The way saturation boost is implemented also decreases colors luminance, increasing the strange looking aspect of saturated colors (most visible on cyan and blue)

What's missing from those measurements:
– Intense sharpening effect applied on every content and can't be disabled
– Slight dynamic contrast, introducing a little bit of banding, serving no real purpose and that can't be disabled.

I would rate it as one of the poorest flagship displays I've seen for a while overall. The sharpening present is off-putting and colors not appealing.
LG seem to have bet everything on "sharpness", focusing on high resolution & pixel density, and then over-killing it with sharpening artifacts.

#supercurioBlog #color #measurements #display #LG


In Album LG G3 display measurements F400K

Source post on Google+

Published by

François Simond

Mobile engineer & analyst specialized in, display, camera color calibration, audio tuning

29 thoughts on “Here's an LG G3, Korean LG-F400K display measurements ran today with my spectrophotometer and my in-house program”

  1. +Michael Stanton Yep our senses and… even humans in general adjust incredibly to some of the worst situations ^^
    Shitty can become fine (even for stuff like relationships) but you can always realize later what was missing or wrong later, and appreciate it.
    For color accuracy the idea is to have a standard between content creators and viewers, so both see kind of the same thing.
    Like if an artist painted his canvas, in colors and you could see it only in black or white.. or with colors shifted.
    It doesn't mean it looks bad in black & white and with different colors, but.. that's not what the creator wanted to share with the world 🙂

  2. +Bradley Doucet notice that I don't give any "score", intentionally.
    Instead I share the actual measurements reflecting the characteristics, instead of a condensed evaluation mixing up many dimensions into a simplistic evaluation.
    Also, it's not "some program". I developed the measurement tool myself.

  3. +Brad Breese it's a difficult question to reply to because currently all of them are quite inaccurate in different ways.
    Although I developed something new this week end that might help everyone evaluation displays with a "simulator", that's still work in progress but surprisingly representative.

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