I have photographed many flowers using a 200mm Nikon macro lens, but now that I have the Mamiya 645DF, I have been considering the Mamiya Auto Bellows for flower photography mostly in the studio. I am unsure of whether bellows would be useful because I have no experience with using bellows...and don't really understand it's advantages (if any). I realize bellows would be bulky. I have Mamiya extension rings and a Mamiya 120mm macro lens. Are there any substantial advantages or disadvantages with respect to depth of field using bellows? While I might do some extreme macros...that is not my primary interest at this time. What if anything would bellows bring to my table? Charles