The major exception is that it is incompatible with Nikon's F-mount DSLR range, whether you have an M42 adapter or not. The lens is notable for having been engineered to have a 'swirly' bokeh ...

To do the modification for the FD lens, all that’s needed is some epoxy, a screw driver, and an M42 to EF adapter. After disassembling the back of the FD lens, [Sam] mounted the M42 adapter on ...

Also known as the 44M, in M42 mount. 8 Jul 2019 1:55PM by John Riley | Zenit MC Helios-44K-4 58mm f/2.0 in Vintage Lenses BUY NOW ZENIT MC Helios-44K-4 58mm f/2.0 ...

Alpa Si 2000 (1977) Alpa, the brand name of the Swiss camera manufacturer Pignons S A, is a marque synonymous with ...