Auto Chinon 28mm f/2.8 M42 lens on digital camera — Simon Hawketts' Photo Blog
The Auto Chinon 28mm f/2.8 lens is an M42 mount lens with a manual/auto diaphragm switch and a pin in the mount to close the aperture at the point of taking a picture. In this post, I review its use with two reasonably modern digital cameras, a Sony Nex 6 and a Ricoh GXR.