Sell K&F Concept adapter for M42 42MM Screw Lens to Canon EOS EF Camera 800D 90D 5D4 best price

K&F】 M42-EOS K&F Concept is a one-stop refined photographic solution provider. K&F Concept specializes in design. research, manufacturing, and marketing of photographic accessories.K&F committed to creating professional and innovative products backed by friendly, responsive service to delight our distinguished customers around the world. Features: High quality and compact. Made of brass and aluminum (not plastic). 100% Brand New Color: Silver Suitable for: M42 Mount Lens Canon EOS DSLR camera Note: If your camera indicated "lens is not properly installed", please modify the camera menu settings. Usually called the release the shutter the lens is not installed", you can modify the settings to allow. Specifically refer to the camera manual Although the lens will fit physically, automatic diaphragm, auto-focusing, or any other functions will not operate while using this adapter.There is no electrical contacts in the adapter ring. Full manual operation, manual focus, manual iris adjustment can be achieved with body manual exposure, aperture priority exposure.In this case "stop-down mode" will need to be used when metering since the lens does not have the ability to have its aperture controlled by the camera body.You can shoot in Manual or Aperture Priority Mode. Before use, set your camera Menu: "Shoot without lens".