L mount is developed jointly by Leica, Panasonic and Sigma, for full-frame mirrorless cameras.L mount cameras including: Leica SL SL2 T TL TL2 CL cameras; Panasonic Lumix S1 S1R S1H cameras; Sigma FP cameras, etc.L mount is not simply equivalent to Leica camera (Leica M, Leica R, Leica L are different mounts), please confirm your camera mount before purchase.

Manual adapter without electronic contacts, no auto-focus or aperture control.Connect OM lens to L mount mirrorless camera.Support focus to infinity manually.Aperture: Aperture cannot be adjusted with manual adapter, and will be defaulted to the largest.Aperture can only be adjusted when your lens has a manual aperture control ring itself.Use a zoom lens with manual adapter, set the aperture to what you want before connecting to the adapter and camera.