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 - Constant f/2 USM Zoom Lens
 - High Image Quality at f/2 that Rivals the EF 24-70mm f/2.8 at f/2.8
 - High Reliability and Durability for Professional Use
 - Vibration Shock Resistance
 - Dust- and Water-resistant
 - Fluorine Coatings on the front and rearmost surfaces prevent dirt and dust from sticking
 

            


