I dunno, in my experience going from 1080p to 4K is a huge benefit for photos as well. While I wouldn't necessarily notice the extra details when looking at a photo from a distance, when I see the 4K next to the 1080p displaying the same photo it is noticeably more "realistic" somehow. Considering that even phone cameras take 12MP+ pictures, that extra detail has to count for something. For me pretty much everything looks noticeably better on a 4K display. Granted I'm slightly under 30 but I do wear glasses, so I dunno how much eyesight affects things.