Designed to fit lenses with a filter thread of 77 mm Help to protect the front element of lenses from finger prints, dust and scratches Colour balance is not impacted Clear filter provides no additional colour or contrast, allowing you to pair this filter with others The Canon 77 mm Protect Lens Filter is a clear filter that helps to guard your front lens element from dust and scratches. Designed to fit lenses with a filter thread of 77 mm, you can leave this clear filter on your lens during use as it has no impact the colour balance. Features Compatibility EF 24mm f/1.4L II USMEF 24mm f/1.4L USMEF 85mm f/1.4L IS USMEF 300mm f/4L IS USMEF 400mm f/5.6L USMTS-E50mm f/2.8L MacroTS-E 90mm f/2.8L MacroEF 1635mm f/4L IS USMEF 1740mm f/4L USMEF 2035mm f/3.54.5 USMEF 2470mm f/2.8L USMEF 2470mm f/4L IS USMEF 24105mm f/4L IS USMEF 24105mm f/4L IS II USMEF 24105mm f/3.5-5.6 IS STMEF 28300mm f/3.55.6L IS USMEF 28300mm f/3.55.6L IS USMEF 70200mm f/2.8L IS II USMEF 70200mm f/2.8L IS I