Allows any M42 lens to be used with full range focus to infinity. The basic adaptor requires auto lenses to have an auto/manual (A/M) switch to allow the lens to be used manually.

SPECIAL ORDER. If your lens is auto only, with no A/M switch, we can modify the standard adaptor to provide a shoulder which depresses the aperture pin as the lens is screwed in. This is not suitable for Pentax ES lenses. Please allow 4-6 weeks for delivery