Super slim M42 screw mount lens to Leica L mount adapter - for macro helicoid extension ring - Leica SL TL Panasonic S1 Sigma FP
1mm thickness, designed for M42 extension rings and helicoid rings (sold separately). Also used for modification of camera mounts.
For using Leica / Panasonic / Sigma L mount mirrorless digital cameras with M42 (42mm x 1.0) screw mount helicoid rings.
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 body.