CANON 2577A002AA EF 100-400MM USM ZOOM TELEPHOTO LENS 2577A002AA. ßLENS FOCAL LENGTH and MAXIMUM APERTURE: 70-200MM 1:4.0;ßLENS CONSTRUCTION: 16 ELEMENTS IN 13 GROUPS;ßDIAGONAL ANGLE OF VIEW: 34??12?;ßFOCUS ADJUSTMENT: INNER FOCUSING SYSTEM WITH USM;ßCLOSEST FOCUSING DISTANCE: 1.2M / 3.9 FT.; ZOOM SYSTEM: ROTATING TYPE; FILTER SIZE: 67MM;ßINCLUDES LP-1224 CASE and ET-74 LENS HOOD