AF Confirm Adapter For CY Contax Yashica Lens to Canon EOS EF Mount 1100D DC136 It is a aperture pin stop down flange version. It is possible to use Macro rings and other accessories. Make Contax Yashica Yashinon Zeiss C/Y CY mount lenses can be used on Canon EOS EF camera body. Supports AV (Aperture Priority) and Manual Mode. Fixed a bug of focus on EOS 60D, 550D, 7D,and reprinted contacts.