I am actually just getting back into film photography myself, and I liked the idea of being able to go around areas and taking pictures of things that interest me in these levels.
I played the demo, and I think the concept seen in it is nice. I do want see more things I can do to interact with the environment (in the parking garage, I only saw the doors, key and vending machine. I hope you continue to support and improve the content of the levels. and add more levels which are bigger so that you really have to explore and search for those photo ops to complete the level!
Maybe you could add controller support down the road?