These adaptors position the lens exactly the same distance from the film in the rangefinder body as it would be on the SLR body - so full focus range is maintained. However, there is no connection between the lens and the rangefinder mechanism. This means that you have to estimate the distance and set the focus ring of the lens accordingly.

Other 35mm Lenses on Leica M Bayonet Fit Rangefinder Cameras Adaptors to use lenses from 35mm SLR cameras on M bayonet rangefinder cameras. Also included are adaptors to use M39 rangefinder lenses with the bayonet bodies.

Other 35mm Lenses On Leica M39 Screw Fit Rangefinder Cameras Adaptors to use lenses from 35mm SLR cameras on the M39 thread rangefinder bodies