Meike Cinema Lens 50mm T2.2 for Micro Four Thirds Filter Type_Special Effects if you are looking for

if you are looking for a very nice Aero-Ektar

and a tension control

and it's about the right size not to get in the way with a rangefinder-sized camera

depending on what your camera supports

A classic ultrafast standard lens for your FD-mount camera

Meike Cinema Lens 50mm T2.2 for Micro Four Thirds Filter Type_Special Effects if you are looking forThe Meike Cinema Lens 50mm T2. 2 is a compact, manual focus lens for Micro Four Thirds. Designed for video use, with geared focus and aperture controls and a 77mm filter thread shared with other Meike lenses. Nevertheless, there's nothing stopping you from using this for stills, if you want. In excellent condition, with clean glass and only minor cosmetic wear.