Canon EF 70-300mm f4-5.6 III USM brand_Pentacon This is a manual-focus lens

This is a manual-focus lens for Leica's R-series film SLR cameras

Konica used to say that these lenses would only work with their own Hexar RF

this adapter provides a 180-degree diagonal angle of view with pretty decent image quality

Plus the Pax logo is a red dot

and the autofocus is about as good as you'd expect

Canon EF 70-300mm f4-5.6 III USM brand_Pentacon This is a manual-focus lensThe Canon EF 70 300mm f4 5. 6 III USM is a good basic telephoto zoom lens for film and digital EF mount EOS cameras. No stabilizer, but pretty solid image quality throughout the zoom range. Clean glass, good function, minor cosmetic wear.