Canon EF 17-40mm f/4L USM Ultra Wide Angle Zoom Lens for Canon SLR Cameras
by Canon
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Digital Photo Product Details
Manufacturer: CanonModel: 8806A002
Product features:
- 17-40mm ultra-wide-angle zoom lens with f/4 maximum aperture for Canon SLR cameras
- 3 aspherical lens elements and super UD glass element create superior optics in all conditions
- Powerful ring-type ultra-sonic monitor (USM) produces fast and silent autofocusing
- Focuses as close as 11 inches; supports screw-in 77mm filters or up to 3 gel filters
- Weather-resistant construction; measures 3.3 inches in diameter; 1-year warranty
- Dolica CF-U77 77mm UV Filter
- Tiffen Domke F-505 Lens Case - Small
- Dolica CF9-ND77 77mm 0.9ND 8X Neutral Density Filter
- Dolica CF3-ND77 77mm 0.3ND 2X Neutral Density Filter
- Dolica CF-C77 77mm CPL Filter
Digital Cameras Photo Reviews of Canon EF 17-40mm f/4L USM Ultra Wide Angle Zoom Lens for Canon SLR Cameras
Customer Review: Good for APS-C Cameras
Summary: 5 Stars
Despite this lens is not good for full frame cameras, it is an excellent option for a APS-C size sensor such as Canon 50D and Rebel T1i. On a full frame camera, this lens produce soft corners however, because of the crop effect of APS-C sensor this problem does not show up in the pictures and the lens deliver Pin Sharp pictures from the center to the corner always. As any Canon L series lens, the image is superb with high resolution and wonderful color saturation. The construction is also superb and comes with lens hood as well which is a plus. One also have to consider the prices which is very low for a Canon L lens. I certainly recommend this lens for any APS-C sensor cameras. It is a must have... A keeper... A winner...
More Canon EF 17-40mm f/4L USM Ultra Wide Angle Zoom Lens for Canon SLR Cameras reviews:
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Description of Canon EF 17-40mm f/4L USM Ultra Wide Angle Zoom Lens for Canon SLR Cameras
EF 17-40mm f/4L USM ultra-wide-angle zoom lens * compatible with Canon EOS SLR cameras * Canon L Series lens with three aspherical elements and one Super UD (Ultra-low Dispersion) element for superior image quality * available full-time manual focusing * weather- and dust-resistant construction * ring-type Ultrasonic Motor for fast, silent autofocus * built-in gelatin filter holder * minimum aperture: f/22 * minimum focus distance: 11 inches * constructed of 12 elements in 9 groups *Broaden your perspective with the Canon EF 17-40mm ultra-wide-angle zoom lens. Ideal for both film and digital SLR cameras, the lens offers three aspherical lens elements in addition to a Super UD (ultra-low dispersion) glass element, creating superior optics in all conditions. In addition, the lens focuses as close as 11 inches (0.28mm), and offers both Canon's full-time manual focus and a powerful ring-type ultra-sonic monitor (USM) that produces fast and silent autofocus. Other features include a constant f/4 maximum aperture, the choice of screw-in 77mm filters or a holder in the rear of the lens for up to three gel filters, and optical coatings optimized for use with digital cameras. Boasting weather-resistant construction similar to other high-end L-series cameras, the lens carries a one-year warranty.
- Focal length: 17-40mm
- Maximum aperture: 1:4
- Lens construction: 12 elements in 9 groups
- Diagonal angle of view: 104 to 57 degrees (at 30 feet)
- Focus adjustment: Inner focusing system with USM
- Closest focusing distance: 0.9 feet
- Zoom system: Rotating type
- Filter size: 77mm
- Dimensions: 3.3 inches in diameter, 3.8 inches long
- Weight: 1.1 pounds
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