Canon EF 70-200mm f2.8L IS  type_Audio and the diaphragm is clean

and the diaphragm is clean

Focusing is manual

A classic Tessar design

This DW-1 is in very good condition

828 is the  is the same width as 35mm- but it was on a tiny spool with backing paper

Canon EF 70-200mm f2.8L IS &nbsptype_Audio and the diaphragm is cleanThe Canon 70 200mm f2. 8L IS is a pro quality telephoto zoom lens for any Canon EF camera. With sharp glass, quick focusing, fast f2. 8 constant aperture, and an effective image stabilizer, this is an indispensable lens for shooting events or sports. Glass is clean, with only very minor internal dust. In excellent cosmetic condition, with very minor wear. Includes original hood and softcase.