Canon EF Zoom Telephoto Ultrasonic L IS USM 70-200mm F/4 (EF-Mount) LEN1021

The pinnacle in Canon's constant-aperture telephoto zoom lenses, the EF 70-200mm f/2.8L IS USM Telephoto Zoom Lens is an incredible optic with robust design and tacksharp results. Second-generation Image Stabilization responds in as little as 0.5 seconds, while providing up to three stops stabilization that as handholdable as a normal lens. IS now automatically deactivates when on a tripod by sensing non-movement of the camera and lens, also conserving battery power. An entirely new optical formula produces images that are superior to even its highly regarded predecessor, the EF 70-200mm f/2.8 L, despite having more reflective surfaces within the lens. Rubber O-ring can be combined with EOS 1V and EF "II" teleconverters for near imperviousness to moisture exposure Two-stage Image Stabilization can correct for all types of camera shake or just up/down shake (for use when panning with a moving subject) Focus limiter switch Shorter minimum focusing distance and higher maximum magnification than its 70-200mm f/2.8 L predecessor