Mamiya 200mm F2.8 APO Telephoto for M645 & 645AF FamilyEbay AuctionThe 200mm F2.8 APO is an exceptionally sharp telephoto and can be mounted on Canon and Nikon dSLRs via a Mamiya/EOS (or Nikon) adapter. I purchased the lens new and it has been well cared for. It looks like new and performs perfectly.