I think even better than asking the photographer to fix it, you could mention that you think it's an easy fix well within your reach but you wanted to know if he's ok with you doing it yourself. This way you're a) showing you understand it's not cool to just go around and mess up other people photos, and b) not asking for anything, technically.. He might be the one proposing to help instead!
I think even better than asking the photographer to fix it, you could mention that you think it's an easy fix well within your reach but you wanted to know if he's ok with you doing it yourself. This way you're a) showing you understand it's not cool to just go around and mess up other people photos, and b) not asking for anything, technically.. He might be the one proposing to help instead!