After calibration, colour reproduction in SDR content is quite good. The white balance has been effectively improved, resulting in natural, balanced hues across different scenes. The gamma has also been adjusted, providing a more precise representation of details in the shadows and bright areas of the image. As a result, the LG UR781 TV performs well in everyday use, offering solid colour quality and clear, well-balanced images in SDR mode.
However, the situation is less favourable for HDR content. The LG UR781 TV does not support a wide colour gamut, which limits the depth and richness of colours that HDR can provide. The EOTF curve deviates from the ideal, leading to excessive highlighting of details in the bright areas of the image. Unfortunately, this approach results in significant colour reproduction errors, as confirmed by tests on the Colour Checker. Additionally, the low brightness level of the panel further negatively impacts HDR image quality, causing the effects of dynamic range to not be fully realised and colours to appear washed out.
Despite some shortcomings in HDR mode, the TV has significantly improved after calibration, especially in SDR content. The enhancement of white balance and gamma has notably increased image quality, providing a more natural and cohesive colour reproduction. Compared to its pre-calibration state, the difference is clear, and the LG UR781 TV now offers better performance in everyday use, particularly in standard dynamic range.
Colours after calibration on the Hisense A6Q need to be evaluated in two ways, as everything depends on the type of content. In the case of SDR materials, the effect is really quite good. In daily programs, series, and movies, it’s hard to find any serious issues with colours. The yellow tint has been effectively removed, and the television has also stopped washing out the entire image. As a result, the ColorChecker test showed errors below a Delta 2 value, which are already outstanding results, allowing for a discussion of very high picture quality in standard content. Unfortunately, the situation looks much worse for HDR materials. Yes, the white balance has been corrected and the EOTF curve has been improved, but the limitations of the panel itself remain insurmountable. The lack of support for a wide colour gamut means that the television still generates quite significant colour errors. Parts of the colours simply cannot be displayed by the screen, making them look less saturated than they should. It’s a pity because even a simple PFS or QLED filter would have resulted in a significantly better end effect. The conclusion is therefore simple – for SDR content, the A6Q after calibration works really very well, while viewing HDR content on it should still be approached with caution.