Digital cameras now allow that freedom. Take 300 pics, and pick the one or two that work for you, get home and print them up poster size if you like. Its the way ahead, but only one thing, dont try and crash the ships photograhers "back drop" spot to do it. It really pee's them off 8) 8)
And unlike most of the ships "serving" crew, these guys in my experince earn on sold pictures, so maybe they can be a bit pushy, but in my experience mostly nice people trying to earn a buck.