And $50 for each band member, is not free.
I think each band member should pay the photographer $30 each to shoot the photos, since they will be planning on getting other gigs, and make more money, because of the photographers photos.
In fact, the photographer should get a cut for each gig they subsequently get by using the photographers photos. I think the photographer should get 5%. If there are 4 band members (collectively getting $200, the photographer would get $10 a gig as a use license fee.