The Canon EF-S 18-135mm f/3.5-5.6 IS Lens is designed as a step up from the standard-at-review-time 18-55mm IS kit lens.The 18-135mm F3.5-5.6 IS USM Canon lens equipped with Nano USM, a new type of focusing motor that combines the benefits of a ring USM (ultrasonic motor) for high-speed AF during still photo shooting and lead-screw type STM (stepping motor) for smooth and quiet movie AF, and improved AF speeds up to 4.3x (Tele) and 2.5x (Wide) faster than the previous model. The 18-135’s most attractive features are a wide (7.5x) focal length range, a low price, a relatively light weight/small package, and a very nice IS (Image Stabilization) implementation providing up to four stops of optical image stabilization.
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