If you haven’t looked through Philip-Lorca Dicorcia’s work you really should. Some of his street photos are posed, some of them are not, but the common thread that runs through his working is outstanding lighting.  The whole series entitled “Heads” was shot in New York with strobes attached to scaffolding on a city sidewalk. I have read that he used a 500mm lens for these shots, which would make sense given the depth of field and perspective. Often, if I’m bored, I try to analyze where the light is coming from in his shots. Well worth a look!!!