It is working properly, t he focus ring is smooth, soft, and easy to turn all the way through its range.
Biometar MC 2.8 80 mm Carl Zeiss Jena Pentacon six lens
Zoom Lens EXAKTA MC MACRO 4/28-70 MINOLTA MD MC Bayonet 28-70mm F/4
Sirius MC Auto Zoom 80-200mm f/3.9 Zoom Lens Canon FD Mount 55mm
Hanimex MC Auto Zoom 80-200mm f=1:4.5 52mm C-Macro Lens, Canon FD Mount.
Sirus MC Auto Zoom 80-200mm Lens
Canon Zoom Lens EF 3.5-5.6 / 28-80 mm for Canon EF Mount / Analogue
