I have multiple Minolta lenses (28mm, 50mm, 200mm, 400mm, 500mm) that I use with my 35mm Minolta camera. Most of these are a MC or MD mount. However, the 500mm mirror lens is labeled as a "RF" Rokkor - don't know if that has anything to do with my question. I want to be able to use these lenses with my Canon EOS 40D since all of them are in pretty good shape. Was simply wondering if this mount adapter would do the trick. Got decent reviews. To be able to use all these lenses on my digital camera for $40 would be amazing.