I'm no street whizz compared to some out there but I do love shooting it!
Personally I don't think it's all about subject
and environment though, sometimes the subjects themselves are what catches your eye and their surrounding is as bland as the back of your own hand
Sometimes I ask the person or just let them know after and hand them my card either way. Other times you can't because they're unreachable (driveby/commutor/sleeping person etc!).
I think out of all the street shots I've done I've only ever asked people a few times.
Here are some examples of
asked,
told after or
neither
:
1: Neither.
2: Neither.
3: Asked, then she looked up at the tube map, I saw the moment...
4: Neither, was walking past the shop.
5: Neither, this was a 30mph driveby
6: : Neither, shot while crossing the street!
7: Asked, street busker, gave him some cash.
8: While walking past the window one night. Told later & gave a free framed print.
9: Asked as I was within their personal space on the beach.
10: Neither.
11: Asked.
12: Neither.