Autofocus Slr

The EF-S series Canon lenses are applicable to exceptional lenses Canon digital SLR cameras, such as the EOS 20D and Rebel models. Why? The characteristic key design aims to match the image sensor in APS-C image circle. How? This goal matching is achieved by reducing the distance between the rear of the lens and the focal plane, which decreases the size of the image circle.

The result? Canon EF-S lenses are more efficient in terms From the weight and cost of wide-angle lenses, while ensuring superior image quality, resolution and contrast at all focal lengths.

As a member family of EF-S lenses, the 17-85 F4 L IS USM is a high performance wide-angle to telephoto. Its feature list include: image stabilization for situations hand, and it's optically optimized for digital SLR camera, a ring-type USM is designed for fast and quiet autofocus. The complete manual focus AF mode is also a useful addition.

The EF-S 17-85mm f/4-5.6 IS USM lens provides a 5x zoom ratio and an angle of view equivalent to a 27-136mm lens on a 35mm camera. Also present at this lens is a molded glass aspherical lens element with aspherical surfaces on both sides. The result, excellent image quality across the entire zoom range. The focusing distance is impressive, at a distance of 12 inches at all focal lengths. Finally, the EF-S 17-85mm IS lens, compared with the EF 28-135mm IS lens is 5% shorter and 12% lighter, and accepts 67mm filters.

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Autofocus Slr

Autofocus Slr