Canon EF-S 17-55mm f/2.8 IS USM Zoom LensThe Canon EF-S 17-55mm f/2.8 IS USM zoom lens, with its constant f/2.8 aperture throughout the zoom range, is the top-rated, and most expensive, of Canon's EF-S lenses designed specifically for Canon EOS digital SLR cameras with the smaller APS-C format sensor.
In a Nutshell:
Canon designed this high quality, standard zoom lens to satisfy demand from customers using digital SLRs with the smaller APS-C size sensors who wanted a lens offering superior image quality, similar to that found in L-series optics.
The majority of Canon's EF-S lenses are not professional quality and are made to meet the less demanding needs of amateur/hobby photographers and first-time users of digital SLRs.
But there are professionals, particularly wedding photographers, using Digital Rebels and 20D-50D bodies, who need to produce top quality images, often in low light. This lens fits their needs with its image stabilizer, f/2.8 maximum aperture, and reasonably wide focal length (27.2mm equivalent) at the wide end.
The Canon EF-S 17-55mm is compatible with:
* EOS Digital Rebel (300D)
The EF-S 17-55mm f/2.8 will not fit on any EOS 35mm film bodies, or EOS digital cameras with full-frame sensors (1Ds and 5D range) or APS-H sensors (1D range).
User Review Roundup for Canon EF-S 17-55mm f/2.8 IS USM
User Ratings Roundup:
Star Rating (max 5): 4.5
What Users Are Saying:
"Great in low-light situations. Images are sharp, and built well for non-L lens."
"Razor-sharp, low chroma distortion, wide aperature, good build quality, ultra-fast focus, useful zoom."
"This lens performs great but collects dust easily.".
"Favorite walkaround lens. Excellent in low light, good for portraits, and its not TOO heavy."
"Superb low light lens, excellent for indoor images without flash, and for portraiture, where shallow depth of field is desirable."
Manufacturer's Feature List for the Canon EF-S 17-55mm f/2.8:
* Wide angle zoom for EF-S mount bodies
* Portrait photographs at long-end (88mm equivalent)
Now that you've read about the Canon EF-S 17-55mm f/2.8 IS USM Zoom Lens, see also Canon EF-S 10-22mm f/3.5-4.5 USM for info on a true ultra wide lens for Canon EOS digital SLR bodies with APS-C sensors.
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