When I look at that image, I try to imagine the negative and circumstances...it's an on the fly shot, metered by memory and instinct and
fortunately, there's good information there. I think the nature of the exposure , and print, would lead to a natural vignetting anyways...
but I have seen it in some of his work as you mentioned. Not sure how good a printer Garry was, but I'm assuming not too
bad. Lee Friedlander, who was a good friend of Winogrand and spent time with him in LA just before he passed, had a funny
story once of joining Garry in a darkroom one day when Garry was going to begin printing for a show, and watched Garry hang
a bow-tie and a rabbits foot off of the enlarger for good luck (he was apparently pretty superstitious)...Winogrand laughed and
said, "It can't hurt". I admire Winogrand and enjoy his work immensely...he had such a drive and passion for
capturing the world around him, one could say almost obsessive in nature. As photographers, I'm sure many of us can relate.