Canon EF-S 17-85mm
One of the best in this lens series of EF-S lenses is the Canon EF-S 17-85mm. This has been arguably the best lens in the EF-S series. The key design feature is aimed at matching the APS-C Imaging Sensor to that of the image circle. This objective can be achieved by reducing the distance between the focal plane and the rear of the lens, thus decreasing the image circle size.
This has resulted in getting a more cost efficient and reduced weight wide angle lens, thus ensuring a superior image quality, better resolution and contrast over a wide range of focal lengths. These lenses do provide great image quality for an affordable and versatile package.
![]() | Canon EF-S 17-85MM f/4-5.6 IS USM Standard Zoom Lens Equivalent to a 28-135mm lens, this new EF-S lens brings true wide-angle to tele coverage to EOS 20D and Digital Rebel shooters. It has Canon's ... read more |

The EF-S 17-85 mm is a strong performing lens with features like Image Stabilisation for the hand held situations and has been optically optimized for a Digital SLR camera. It also has a ring type USM that has been designed for silent and fast auto focus. It also has a useful addition of full time manual focus in AF mode.
The Canon EF-S 17-85mm lens provides a 5x zoom ratio and a wide angle of view that is equivalent to the 27-136 mm lens available on a 35mm camera. This lens has glass moulded aspherical lens on both the sides giving an impressive image quality in the full zoom range. The EF-S 17-85 mm lens compared to a 28-135 mm lens is 5% shorter and 12% lighter making it a better one.















