Chromatic aberration! When I played R&C: Rift Apart on PS5 I was taking screenshots and genuinely thought there was some kind of foveated rendering in play because of how blurry the corners of the screen looks. Turns out it was just chromatic aberration, my behated.
Hate film grain too because I have visual snow and I don't need to stack more of that shit in my games.
I use that site for my screengrabs! Fun PC tip: you can shift + right click to bypass the image protection and save / copy images as usual.