EF mount Canon EF-S EOS lens to Leica M L/M mount adapter - M8 M9 M-P M Typ 240 246 262 helicoid lens adapter The optimal focal length is

The optimal focal length is 50mm (35mm film format)

while infinity focus is available

This is the programmable EMF AF confirm chipped lens adapter ring with built in circuit board for DKL mount lens on your Canon EOS EF mount camera

7x adapter is high quality optical adapter

The MagFilters retain incredible sharpness with high quality Glass Optics Made in Japan encased in an all metal filter body

EF mount Canon EF-S EOS lens to Leica M L/M mount adapter - M8 M9 M-P M Typ 240 246 262 helicoid lens adapter The optimal focal length isThis adapter allow you to use Canon EF mount lenses to fit on Leica M mount camera body. (Electronic functions such as aperture control are disabled) Using this adapter, although the lens will fit physically, automatic diaphragm (AE metering), or any other functions are not retained using this adapter. In this case the user will need to meter in "stop down mode" since the lens does not have the ability to have its aperture controlled by the camera