HX850 still struggles with some reflections from windows and lamps. It might prove to be a problem during daytime depending on your living room layout and windows.
Color gradation is fairly good but not fantastic. We noticed some problems in the dark and semi-dark areas and even though Sony has managed to improve the dark tone reproduction in the last few years, Sony still has some running to do before they catch up with the best plasma TVs available today. Color performance is by no means bad and on par with the typical LED model today but we still hope to see further improvements in this area in the future. To put Sony HX850 in context it is on par with Panasonic DT50 but below Samsung ES8000
Sony utilizes a backlight scanning backlight system like almost every other manufacturer nowadays and it helps to improve motion reproduction by reducing motion blur in movies and games. Some motion-blurring still occurs on HX850, and detailing is reduced in fast-paced action scenes but the issues are not critical in any way. We did notice one problem, though. HX850 revealed mild overdrive trailing (halos around moving objects); not enough to affect everyday use but it was visible a few times during action-paced first person shooter games, which is a shame.
Input lag was measured to 28-32 ms in the game mode, which is quite good for a LCD-TV. Plasma TVs are still faster and should be the preferred choice for gaming.
After calibration we measured black depth to 0.06 cd/m2, which is fairly good compared to the typical edge LED based TV, and only slightly higher than Samsungs ES8000. However, Sony has not improved black level reproduction dramatically in the past few years.
Shadow detailing is fair after calibration. Before calibration Sony HX850 crushed most details in the dark areas of movie scenes but after calibration only the 2-3 grey tones closest to black were hard to distinguish. This is very common on LCD-TVs.
3D picture quality has not changed much, however. Some crosstalk still occurs and even though Sony took a huge leap in 2011 compared to 2010, we still want more. If you seek a crosstalk-free experience you have to wait for a faster display technology to become mainstream, it seems. Plasma TVs still beat LCD/LED models when it comes to 3D picture quality but even plasma TVs are not crosstalk-free. 3D picture quality is fair for casual use and movie watching but during gaming, we still noticed crosstalk at times.
To put it in context, HX850 is on par with most other LCD-TVs in this price range. 3D picture quality is fair but not great.
The black color also looks more greyish from an angle.