Image Quality: That’s What the Technical Measurements Say
The differences are already huge when it comes to color reproduction. Because not every TV is calibrated properly in the factory. This manifests itself in a distorted display of colours, for example when the skin tone appears red, the image has a bluish tint, or as the skin of a European coniferous forest hulk glows green. The user can then painstakingly experiment with the color settings, with the professionals themselves using measuring tools and programs to perform the correct calibration.
The LG B2 (OLED55B29LA), Panasonic LXW944 and Samsung QN95B have nearly full color fidelity prior functions. With an average Delta E of 1.4 (LG and Panasonic) and 1.6 (Samsung), colors hardly deviate from the original. To explain: the lower the value, the better. They achieve great results in Cinema Expert (LG) and Filmmaker (Samsung and Panasonic) modes. All other modes bring in lighter or brighter colors, a cool white or a brighter image, but distort the color representation. OK’s cheaper model was completely wrong with a DE of 6.9. In Mad Max, a deserted desert landscape with brownish-yellow hues resembles a bright yellow rapeseed field. Median television shows slight deviations that make the picture appear blue (DE 2.97).
color space detail
In addition to color fidelity, color space is also important. The former is the ability to accurately display colors, the latter is able to display as many colors as possible. The classic rec.709 color space is sufficient for older film content, television, and many games. Almost every TV covers about 98 to 99 percent. The extended DCI-P3 color space is challenging. Bright and vivid colors are used exclusively in HDR content. The Rec.2020 color space is even bigger. Served as the color space of the future, even the most modern televisions do not cover it completely.
Median TV’s picture shows deep blacks and covers many colors of the extended color space.
The LG model, on the other hand, masters DCI-P3 colors by 97% and the Samsung by 95%. The cheaper Panasonic LXW944 fetches a decent 87.5%, with the Median up a bit with 89.3%. The test lab could not verify the extended color space from OK to OLED 55950UC-TAB. In turn, it scores with a high contrast ratio of 4,879:1. With 7,672:1, Samsung gets a lot out of an LCD panel, but lags behind TVs from Median and LG, which deliver rich blacks and very high contrast thanks to OLED technology. Panasonic’s LXW944 shows neither. Black appears slightly grey, reaching a brightness of 0.6 candelas per square meter (cd/sqm) in measurement – the value for OLED is 0 cd/sqm.
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