The LG UF7700 4k LED TV has great smart features and good color accuracy at an angle. However, its picture quality when sitting in front is sub-par, both in dark and bright rooms. The contrast ratio is low, it has a few uniformity issues, and it reflects more light than average.
The LG UF7700 isn't a great 4k TV. The picture quality both in a bright and dark room is not good. It also has high input lag and average motion blur for video games. In terms of positives, the smart features are great, and it has a great viewing angle.
This LG TV (except the 70") has an IPS panel. The contrast ratio is low, which results in poor blacks when you have the lights off.
It is equipped with the local dimming feature. The zones are really big, so as you can see in this video, it isn't very effective.
The main advantage of an IPS panel like the one found in this LG is the color accuracy at an angle. Instead of losing saturation, the picture just darkens when viewed 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.
This is a 120Hz TV with motion interpolation. It does support 24p playback for movies, and even do the 3:2 reverse pulldown over 60i, but it somehow couldn't do it over 60p.
The input lag is high and varied a lot (from 55 to 65 ms). PC, Game, and Expert1 all had the same input lag when TruMotion was off. When TruMotion was turned on, the input lag increased to 113.6ms.
To enable chroma 4:4:4, set the icon of the input to PC. For 4k @ 60hz @ 4:4:4, also enable UHD Deep Color.