Designed to meet consumer demands for a fast EF-S zoom lens, the EF-S 17-55mm offers image quality on par with Canon's highly regarded L-series lenses. The lens features a large circular aperture that produces a shallow depth of field, creating background blur that draws special attention to the photographic subject. The lens construction, meanwhile, includes UD and aspherical elements that deliver impressive image quality throughout the entire zoom range. And thanks to the Image Stabilizer lens groups--which shift to compensate for camera shake--the image appears crisp and clear on the image plane, eve in dim light. Finally, the lens offers a ring-type ultra-sonic monitor (USM), inner focusing, and new AF algorithms to help achieve autofocus quickly and quietly, along with full-time mechanical manual focusing that makes it possible to manually adjust the focus even in AF mode. As with all Canon lenses, this lens carries a one-year warranty.
- Focal length: 17-55mm
- Maximum aperture: f/2.8
- Lens construction: 19 elements in 12 groups
- Diagonal angle of view: 78 degrees (at 30 feet) to 27 degrees (at 50 feet)
- Focus adjustment: AF with full-time manual
- Closest focusing distance: 1.15 feet
- Zoom system: 5-group helical zoom (front group moves 27mm)
- Filter size: 77mm
- Dimensions: 3.3 inches in diameter, 4.4 inches long
- Weight: 22.8 ounces
Customer Review: Absolutely great on a crop body
I got this lens with my EOS 50D instead of the kit lens. It is a fine lens and, if you have a crop (non-full frame) sensor like a 50D or 40D or Rebel XSi, it is the best choice in this focus range. ...
Customer Review: Great L lens optics, flairs badly, and build like a $300 lens
Pro:
AF, IQ, IS, Contrast, edge to edge sharpness, consistency, definitely in the L league.
Con:
For the price, the flair problem, the plastic used, the extended barrow, the ...
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