1. Buying 4K TVs as large PC monitors is a dangerous game, despite all the sweet lies about “convergence” supposedly enabled by HDMI. You have to make sure the TV has a true “PC mode” with true 1:1 pixel mapping and no “subsampling” (if it exists, it is usually enabled by labelling the HDMI input as “PC“), that you weren’t conned with an RGBW pixel format (or any non-RGB pixel format for that matter), and that the panel can display 6500K colour temperature in "PC mode". Also please note some TVs with IPS panels have a pronounced chevron pattern in their subpixel layout instead of the traditional 3 vertical stripes, which makes ClearType look slightly different even in true "PC mode" (I personally find it cute and inoffensive, your mileage may vary) and that all 4K VA panels have bad horizontal viewing angles.
2. Make sure your RGB levels match. That is, use “full range” for RGB 0-255 displays (PC monitors) and “limited range” for RGB 15-235 displays (TV monitors). Sometimes the drivers don’t get this right. If it’s wrong, and you get “limited range” on an RGB 0-255 display, you will get washed out blacks instead of inky blacks.
1. Buying 4K TVs as large PC monitors is a dangerous game, despite all the sweet lies about “convergence” supposedly enabled by HDMI. You have to make sure the TV has a true “PC mode” with true 1:1 pixel mapping and no “subsampling” (if it exists, it is usually enabled by labelling the HDMI input as “PC“), that you weren’t conned with an RGBW pixel format (or any non-RGB pixel format for that matter), and that the panel can display 6500K colour temperature in "PC mode". Also please note some TVs with IPS panels have a pronounced chevron pattern in their subpixel layout instead of the traditional 3 vertical stripes, which makes ClearType look slightly different even in true "PC mode" (I personally find it cute and inoffensive, your mileage may vary) and that all 4K VA panels have bad horizontal viewing angles.
2. Make sure your RGB levels match. That is, use “full range” for RGB 0-255 displays (PC monitors) and “limited range” for RGB 15-235 displays (TV monitors). Sometimes the drivers don’t get this right. If it’s wrong, and you get “limited range” on an RGB 0-255 display, you will get washed out blacks instead of inky blacks.