Compact, high performance L-series super-telephoto zoom makes it ideal for sports and wildlife photography .Rotation-type zoom ring allows for more precise composition and excellent balance when handholding .
Improved zoom torque adjustment ring allows easy setting of zoom tension. New Air Sphere Coating (ASC) helps to significantly reduce backlit flaring and ghosting Highly resistant to dust and water, and amazing durability enabling shooting even in harsh conditions.
★ Focal Length & Maximum Aperture: 100–400mm 1:4.5–5.6
★ Lens Construction: 21 elements in 16 groups
★ Diagonal Angle of View: 24°–6°10′
★ Focus Adjustment: Inner focus system / USM
★ Closest Focusing Distance: 3.2 ft. / 0.98m
★ Filter Size: 77mm diameter
★ Zoom System: Rotation Type
★ Max Diameter x Length, Weight: Approx. 3.7 x 7.6 in. / 94 x 193mm, Approx. 3.46 lbs. / 1570g (lens only, excluding removable tripod mount) Approx. 3.62 lbs. / 1640g (lens + tripod mount)