If it means anything, Annie used the Mamiya RB67 (or maybe that should be RZ67) a lot for her portrait work, and a Nikon for a lot of her documentary type of work. But she went digital very early. She said herself that she changed every time a new digital camera came along that she felt provided better quality. To be perfectly honest though, I am not sure that knowing which film or which camera was used makes a lot of difference. She was not terribly concerned with equipment unless it didn't get her what she wanted. A lot of her early work was 35mm and one flash. She only moved to 6x6 because the shape of the cover of the Rolling Stone was square. She liked the look of the Mamiya lenses so that is what she went with.