Asahi Macro-Takumar 50mm f4 format_35mm This Refconverter is designed to

This Refconverter is designed to mount to Pentax M-series cameras

8 is an enlarger lens for 35mm film

but for some reason aftermarket lens companies insisted on calling things “automatic” into the autofocus era

and an intervalometer

Assorted brands

Asahi Macro-Takumar 50mm f4 format_35mm This Refconverter is designed toThe Asahi Macro Takumar 50mm f4 is a compact macro lens for the M42 thread mount that provides 1: 1 magnification without the use of extension tubes. There is light oil on the diaphragm, but this is not an auto diaphragm lens, so there is no effect on use. Clean glass, smooth focusing. A nice working example of an early pre set aperture lens.