Zoom Telephoto AF-D 80-400mm f/4.5-5.6 ATX 840 Autofocus Lens for Canon EOS

In 1996 Tokina created a class of telephoto lens when it introduced the original AT-X 840 AF. This was the smallest zoom lens available that had a bright f/5.6 aperture at 400mm. Now Tokina has recreated the lens for the digital age.Still the smallest SLR lens available that zooms to 400mm, the AT-X 840 AF D has a smooth and quick internal focusing system that means the all-metal inner barrel that houses the heaviest glass elements does not have to rotate when the lens focuses, making it much faster than the previous models.Optically, the AT-X840 AF D has multi-coatings applied to the elements that are formulated to compensate of the highly reflective CCD and CMOS sensors in todaya s Digital SLR cameras. The multi-coating greatly reduces the chance of internal flare or ghost reflections.A built-in low-profile tripod collar makes for a well-balanced camera/lens combination when using a tripod or monopod. For best results, Tokina always recommends using a tripod or monopod with telephoto lenses.Another feature that makes the AT-X 840 AF D an excellent traveling companion is the zoom lock switch. The zoom can be locked at 80mm to so there is not chance of a zoom creepa when the camera and lens are being carried over the shoulder.Tokina kept ease of use in mind with the AT-X 840 AF D, the BH-725 lens hood with the a PL Assist spring loaded thumb wheel allows a circular polarizer or special effects filter to be rotated while the lens hood is in place. No more removing the hood to change the position of the filter.