Is it reasonable to use a lens designed for a medium or large format camera on a 35mm camera with a bellows? I sometimes notice lenses priced low on eBay that I think might be fun to try on my 35mm. I'm thinking since the lens is intended to cast its image over a larger area, My 35mm camera would only be using the central portion which is usually the highest quality part of the image. This could be an excelent way to get a good quality macro lens for higher magnifications (4x to 10x). Is there a standard for the lens mounts? How about adapters to either a Canon FD body or a t-mount? Tim Corio