The Canon EF 300mm f/4 L IS USM lens is a pro level fixed focal length telephoto lens ideal for action and nature photography when image quality is a serious concern . The lens features a great optical design that includes two UD (Ultra Low Dispersion) glass elements for superior optical performance. The lens also features Canon's IS (Image Stablization) technology to help make sure you don't loose any more sharpness than necessary due to lens/camera shake (which telephotos magnify). A rotating removable tripod collar is provided to make tripod and monopod shooting a breeze and switching to vertical shots easy. The maximum aperture of f/4 performs better in lower lighting than most 300mm telephoto zooms. The large aperture also allows for shallower depth of field desired for portraiture for which this lens delevers pleasing bokeh. Autococus is fast and quiet thanks to a USM (Ultrasonic Motor) which also allows full time manual focus override. The close focus distance can be limited to 3 meters from 1.5m to minimize focus search time. The convienent built-in lens hood deploys rapidly to prevent lens flare and loss of contrast and retracts compactly for storage. It's just a great long lens for the Canon Shooter.
Standard accessories inclues a LZ1128 Lens Case. Other popular accessories include high quality teleconvers such as the Canon EF 1.4x Extenders.
The EF 300mm f/4L IS USM is Canon's latest introduction in a growing family of interchangeable SLR lenses with built-in Image Stabilizer technology. The new Dual Mode IS system is controlled by a 16-bit microcomputer that minimizes blurred images due to camera shake in Mode 1. When panning, simply switch to Mode 2, and the lens intelligently compensates for movement, providing sharp, stable images. The EF 300mm employs an optical design that compensates for all types of aberrations from infinity to the closest shooting distance of 4.9 feet. Two ultra-low dispersion (UD) glass elements ensure clear images and accurate color. The EF 300mm IS is extremely fast and quiet, too. Its Image Stabilization technology gives you the equivalent effect of up to 2 full shutter speeds faster than conventional lenses. And Canon's advanced ultrasonic focusing motor (USM) and rear focusing design provide silent, high speed auto focusing. Manual focusing is also smooth and easy, thanks to Canon's renowned mechanical focusing system and a wide rubber focusing ring. Whether stationary or panning, using either auto or manual focusing, the EF 300mm f/4L IS USM lens provides all users with the superior imaging performance they've come to expect from Canon. Minimum aperture - 32 Close focus - 4.92' Length - 8 11/6 inches Weight - 2.6 lbs.