Many of my favorite Winogrand photos involve the subject realizing they are being photographed.
Originally Posted by 36cm2
I recently saw a youtube video of an interview with, I think, Winogrand that showed clips of him shooting on the streets of LA. He was doing the dance that Lensworker describes and I remember thinking how most of his subjects seemed a bit disturbed as he approached, because he looked so jangly doing his dance. They seemed even more perturbed immediately after he triggered his shutter, as they weren't 100% sure but thought he had just taken a picture of them. Now this may have been aggravated by the video camera presence for the interview. In any case, I think the slight pre-exposure unsettling may have actually made some of his shots more interesting. Personally, I can't see myself doing it. I'll see if I can post the link later. Best of luck to you.
"Truth and love are my law and worship. Form and conscience are my manifestation and guide. Nature and peace are my shelter and companions. Order is my attitude. Beauty and perfection are my attack."