<ul><li>The EOS/CO allows mounting M42 lenses to an EOS Camera body.</li><li>Exposure metering can be Aperture Priority or Manually. No information is transferred between the lens and camera, so focus is manual.</li><li>Precise compensation of the flange difference of the two mounts allows lenses to be manually focused up to infinity</li><li>Lenses w/o aperture control ring can be manually stopped down with this adapter</li><li>German engineered and manufactured</li></ul><br><br>The Novoflex EOS/CO Lens Mount Adapter allows for a lens with Universal Screw Mount (Pentax M42) to be mounted unto a Canon EOS type camera. Although the lens will fit physically, automatic diaphragm (AE metering), or any other functions are not retained using this adapter. In this case you will need to meter in \"stop-down mode\" since the lens does not have the ability to have its aperture controlled by the camera body.

Novoflex Adapter Compatible with M42 Lenses to Canon EOS Camera Body (EOS/CO)