Canon 77mm UV Haze (Sharp Cut) Filter at KEH Camera
Canon 77mm Protect Filter 2602A001 - Adorama
Amazon.com : Pro Glass 77mm HD MC UV Filter for: Canon EF 70-200mm f/2.8L is III USM Lens (3044C002) - 77mm Ultraviolet Filter, 77 mm UV Filter, 77 UV Filter : Electronics
Amazon.com : 77mm HD MC UV Filter for: Canon EF 24-105mm f/4L is USM 77mm Ultraviolet Filter, 77mm UV Filter, 77 mm UV Filter : Electronics
Used Canon 77mm Ultraviolet (UV) Glass Filter 2605A007 B&H Photo