Canon YB2-0033 Zoom Collar
Genuine Canon Zoom Collar for the EF 16-35 2.8 L USM, EF 16-35 2.8 L II USM, and EF 17-40 4.0 L USM lenses. Package of 1 collar. Made by Canon Japan. The screws used to retain this collar are in stock here.
Canon XA1-1200-559 EF Screws
Canon YB2-1080 Distance Window
Canon YB2-0943-399 Guide Collar
Canon YA2-2347 Collar Screws
Canon YG2-2332 USM Assembly
Canon CY3-2004 Scale Window
Genuine Canon replacement scale window for the EF 16-35 2.8 L USM and EF 16-35 2.8 L II USM lenses. Made by Canon China. New tape is recommended when installing this window, available here.
Canon YB2-0019 Window Tape
Canon YG2-2062 Power Diaphragm
Genuine Canon power diaphragm assembly for the EF 24-70 2.8 L USM lenses. Made by Canon Japan. Unfortunately, this part has been discontinued and is no longer available.
TechNote. Many times the issue you may have with your lens points to the power diaphragm unit, when actually the FPC (flexible printed circuit) has broken and needs replacement. In stock here.
