does anyone know what sort of camera or film Mary Ellen Mark used ???I'm acutely aware that the camera does not make a great photo, but I was looking at her "american odyssey" and her work is incredible. Her images have a sort of "silvery sheen" or look about them. I heard Mary used a 4X5 but the photos look like there "off the cuff", spontaneous and totally unposed and renowned for being so I don't know if mary could of used a 4x5. on the other hand bruce davidson used a large format for his 100th east street ???? any input about her technique would be great!!!!