M42 to M39 AdaptorThe M42 to M39 Adaptor allows the use of M39 enlarging lenses on enlarges or lens panels that have an M42 threaded mount.

This adaptor enables the use of a M39 enlarging lens on M42 connections such as enlargers and panels, extension tubes and bellows, and camera bodies.

This use of this adaptor also enables enables M39 enlarging lenses as macro lenses with M42 extension tubes, bellows and adaptors.