Canon EF Mount, Fixed Focal Length Lens, for 35 mm SLR, Max Aperture: f/5.6, 7 Elements in 6 Groups, Filter size: 77 mm, With Autofocus, Weight: 44.8 oz (1,270 g)
Canon EF 400mm f/5.6L USM Telephoto Lens - Nothing quite compares to the amount of dimension a super telephoto lens can bring to a photograph. All the lenses in the category are part of the L-series, incorporating superior lens construction and USM for quiet, high-speed autofocusing.
