🏒 Lucian Marin It's easy to maintain EXIF data from original photos and display it back in UI. But it's better if all that info is stripped for privacy reasons. GPS location, created date, camera model, software editor can target an individual.

☕ David Antoine At least aperture, exposure time & compensation, ISO and focal length would be very interesting! Camera model could be interesting as well, especially nowadays where smartphones can output very good pics ; you would be hard pressed to distinguish the difference in quality on a squared 720 pix. But you can certainly guess if it was a small compact or smartphone with a focal length of 7 mm for example, where a DSLR would display something like 35 mm... So, not a big deal...