Canon 100-400mmF4.5-5.6L Lens is the first EF lens with a zoom range from 100mm to 400mm. It presents high resolution, excellent contrast, neutral colour balance, and Canon's original built-in Image Stabilizer function. High zoom enlargement is achieved by means of a 6-group configuration with 5 movable groups.
Fluorite and Super UD Glass used totally eliminate secondary spectrum for superb colour rendition. Autofocusing is fast and silent with Canon's ring USM, and AF speed is further enhanced through an advanced, lightweight rear focusing design that incorporates a floating element for consistent image quality at all focusing distances from 5.9' to infinity.
It is also equipped with a dual-mode Image Stabilizer suitable for panning as well as stationary subjects. With full-time manual focus, one-touch zooming with a wide grip, and a special ring that permits adjustment of zooming friction, and that's extremely easy to use, and ideal for a wide variety of applications including nature, wildlife, sports, and documentary photography.
IS Mode-1 works for normal shooting and IS Mode-2 is suitable for panning shots of a moving subject, stabilizing images in viewfinder. The optical system uses one artificial crystal Fluorite and one Super UD (Ultra-low Dispersion) glass lens elements (3rd & 7th), which thoroughly correct chromatic aberration.
The minimum focusing distance of 1.8m is achieved throughout zooming range. The Floating System in rear focusing system is employed for the first time for EF zoom lens to achieve a high definition for the entire focusing range.
A ring USM (Ultrasonic Motor) drives high-speed and silent AF and full-time manual focusing. Linear zooming design with zooming friction adjustment ring gives a good operability of this lens. Extenders EF1.4X and EF2X are compatible with this lens.
Sample Pictures of Canon EF 100-400mm F4.5-5.6L USM AF IS Lens
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