I touched on this in another comment on one of your previous post, but I don't think you saw it?
I see so many people creating offshoots of steemit.com that are still connected, like dtube et al, and I was thinking maybe you could do something like steemgallery.com as an offshoot where people can specifically post quality photography, drawing, painting etc. so there is a place for quality work. They could use the tag steemgallery as an example.
Perhaps something like this would minimize the lesser quality photos, but you're still dealing with people, and some just have rose colored glasses and can't see that what they saw, didn't actually translate to the photo they took.
I don't know enough about how all this works, but maybe you do and can take something from it.