Set your TV & PS4 up perfectly
Where: Settings/Sound and Screen/Video Output Settings
This is going to depend completely on your TV so you’ll need to experiment to see what works and what you like. The PS4 ships with everything set to ‘automatic’ but playing with the options can get you a better picture if your TV supports the changes. Resolution is fairly obvious and pretty much takes care of itself. Switching RGB to ‘full’ however can give you better black tones. The Y Pb/Cb Pr/Cr option on the other hand can give you better whites and colour range. Bear in mind though that these are set to Automatic initially so it can switch between the most suitable options for both games and Blu-rays. Any manual changes could mean you won’t get the best picture across the board.