Excerpt: The Canon EF-S 18-135mm f/3.5-5.6 IS STM Lens is a significant upgrade from the standard-at-review-time 18-55mm IS kit lens . It is an upgrade in many ways, but the 18-135's most attractive features are a wide (7.5x) focal length range , a relatively light weight & small package, a good IS (Image Stabilization) implementation and a low price (a great value in a DSLR kit – medium price otherwise).
Excerpt: This lens is an update to the current Canon 18-135mm IS lens, replacing the standard focusing motor with Canon's new stepping motor technology, which promises, smoother, quieter autofocus performance, which is especially suited to recording video.
Pros: Good sharpness for a superzoom, Lightweight, Fast focusing, Effective stabiliser
Cons: High CA levels, Overpriced when not sold as part of a kit
Canon EF-S 18-135mm f/3.5-5.6 STM IS - Review / Test Report
2 November 2012
Conclusion: The Canon EF-S 18-135mm f/3.5-5.6 STM IS is a pretty obvious choice for those users seeking for a long universal range while keeping a very decent image quality. The new optical design with a large diameter UD element in the front lens group obviously makes a difference compared to its predecessor. The lens is generally capable of keeping a very high center to corner resolution. There's only a slight drop in quality at 135mm at max. aperture.
Summary: Slightly larger than its predecessor (which we reviewed in November,2009), the new EF-S 18-135mm f3.5-5.6 IS STM lens has been developed to match the EOS 650D and offers features to complement the camera's movie capabilities. A new STM (stepping-motor) system provides smooth,quiet auto focusing and is especially valuable for minimising pick-up of camera operating sounds while shooting movie clips.
Pros: You want a general purpose lens for everyday shooting and it's offered with the EOS 650D body., You'd like a lens that requires no readjustment when you fit polarisers and graduated filters. Don't buy this lens if :, You require high resolution at all focal lengths, along with good flatness of field., You need close focusing and macro capabilities. Buy this lens if :, You want a general purpose lens for everyday shooting and it's offered with the EOS 650D body., You'd...