Standard zoom lens with an Image Stabilizer and high zoom ratio. With the Image Stabilizer turned on, you can obtain sharp, natural-looking pictures in dim lighting without using flash or a tripod. Very handy for places where flash is prohibited. Uses ring-type USM for swift, silent autofocus and full-time manual focus. Closest focusing distance is 20 in. (50cm).

• Broad zoom range includes popular focal lengths, from 28mm wide-angle for tight interiors and group shots, to 135mm telephoto, great for sports, nature photography or portraits.
• Image Stabilizer mechanism compensates for camera shake, permitting hand-held photography at the slower speeds necessary in dim light when the use of flash or a tripod is undesirable, impractical or forbidden. Choosing slower speeds also allows use of smaller apertures, resulting in increased depth-of-field.
• Advanced ring-type Ultrasonic Motor (USM) drive delivers precise, silent, high-speed autofocusing. (Full-time manual focus is also provided.)
• Extremely compact and lightweight lens, particularly when considering its near 5X zoom ratio and IS mechanism.

Read more at Canon USA

Reviews

Canon EF 28-135mm f/3.5-5.6 IS USM Lens Review by The-Digital-Picture.com

The Canon EF 28-135mm f/3.5-5.6 IS USM Lens is a very popular lens. If you are looking for a good value 28mm-something zoom lens and your budget limits you to the Canon EF 28-135mm f/3.5-5.6 IS USM Lens’ price range, look no farther. The Canon EF 28-135mm f/3.5-5.6 IS USM Lens provides a great focal length range, reasonably sharp images and IS at a very low price point and in a relatively small package. When purchased as a kit lens with a Canon EOS DSLR, it is an excellent value.

Canon EF 28-135mm f/3.5-5.6 USM IS – Review by photozone.de

Similar to the Canon EF 28-105mm f/3.5-4.5 USM the EF 28-135mm f/3.5-5.6 proved to be a solid performer without any spectacular strengths nor weaknesses except a positive peak at its 28mm setting. The level of distortions is pretty low for such a lens and vignetting isn’t overly pronounced. Due to the 1.6x cropping factor on APS-C DSLRs the range is quite unexciting here but if you’re looking for a compact short tele-zoom with IS to compliment an ultra-wide zoom … why not ?

Canon 28-135mm IS review by KenRockwell.com

If you want a midrange zoom for Canon full-frame digital and EOS 35mm film, this is my favorite lens.

This is the lens I take if I need a do-it all lens for all shots in daylight, and still subjects in dim light.

For moving subjects, Image Stabilization doesn’t help, and a fast f/1.4 or f/1.8 fixed lens is the best idea.

If I only take one lens and expect to be in dim light, the 50mm f/1.4 USM just as well may be my choice.

Personally I rarely use midrange zooms, and instead bring a wide zoom like the 16-35/2.8 L II or 17-40mm L, and a 70-200 f/4 IS tele zoom. I don’t need the range between 35mm and 70mm, and if I do, I use a fixed 50mm lens instead.

Heck, I’ve become more and more a fan of the fixed 50mm f/1.4, which if you don’t mind moving a step or two forward or back, weighs even less and works great in any light, especially with wiggly subjects which IS can’t stop.

Canon EF 28-135mm IS Lens compared Tamron SP 24-135mm f/3.5-5.6 Aspherical AD, Canon EF 24-85mm f/3.5-4.5 and Canon EF 28-105mm f/3.5-4.5 II

Canon EF 28-135mm f/3.5-5.6 IS
This was the overall best performer of the consumer zoom lenses tested. All things considered, I would have preferred having a lens that was 24-105 than 28-135 because I always want wider angle perspective (especially with a D30 and the 1.6x magnification effect of the small CMOS chip). Image stabilization is a handy feature, although I have rarely needed it. This lens appears to be well built, and it is the lens I usually have stuffed in my briefcase or suitcase when I can only take one lens.