| Canon EF Lenses that have a Canon USM focus motor, have a 300mm or longer focal length and have a f/2.8 or faster aperture | | | | | Max focal length | 300 mm | | | Weight | 2.3 kg | | | | | Aperture | f/2.8 | | | Length | 249 mm | | | | | Focus motor | Canon USM | | | Min focal length | 300 mm | | | | | Diameter | 127 mm | | | Auto focus | Yes | | | | | | | | | | | Max focal length | 400 mm | | | Weight | 3.9 kg | | | | | Aperture | f/2.8 | | | Length | 343 mm | | | | | Focus motor | Canon USM | | | Min focal length | 400 mm | | | | | Diameter | 163 mm | | | Auto focus | Yes | | | | | | | |