It is working properly, t he focus ring is smooth, soft, and easy to turn all the way through its range.
Carl Zeiss Jena Biometar 2.8/80 Red MC Lens for Pentacon Six P6, 80 mm F/2.8
MC Biometar 2.8 80 mm Carl Zeiss Jena P6 Pentacon six lens
Makinon MC Auto 80-200 mm/4.0 Lens Lens for Olympus OM Zt. Good #1Q
Canon Zoom Lens EF 3.5-5.6 / 28-80 mm for Canon EF Mount / Analogue
Yashica lens DSB Zoom 28-80 mm 1:3.8-4.8 Made In Japan
