0.72x Focal Reducer Speed Booster Adapter for M42 mount lens to Canon EOS M EF-M mount camera - M5 II M50 M100

Roxsen Global

0.72x optical glass lens adapter for using Canon EOS M EF-M mount APS-C digital cameras with M42 mount (42mm x 1.0) lenses. (Optional M39-M42 adapter ring for M39 lens) Reduces focal length to 0.72, adjust the image size to near 1:1, so that the focal length of the image is close to actual focal length of the lens, e.g. 50mm x 1.5 x 0.72 = 54mm. Helps to increase the maximum aperture to 1 stop, also can use it faster by 1 stop. Switching camera to "Release shutter without lens" in custom menu C.