Sometimes the perfect shot is as easy as walking up and asking to take a photo. Being a photographer gives you this strange superpower; you always have a reason to be overly involved and overly curious.
Sometimes the reward is in the photo itself and what you’ve made permanent.
Sometimes the reward is the person you get to meet that you otherwise wouldn’t have had a reason to approach.
Sometimes the reward is in the moment after, when they get to look at a permanent impression of their face. I [Kady] had a photo teacher tell me once that every photo you are able to take is a gift from the person allowing you to; so never take a photo, but give a moment.