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Sigma 10-20mm f/4-5.6 EX DC HSM Lens for Canon Digital SLR Cameras | 
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| Brand: Sigma
Category: Photography
List Price: $569.00
Buy New: $479.00
You Save: $90.00 (16%)
New (10) from $479.00
Avg. Customer Rating:  52 reviews
Media: Electronics
Autographed: No
Memorabilia: No
Fragile: No
Batteries Included: No
Optical Zoom: 2
Maximum Focal Length: 20
Minimum Focal Length: 10
Shipping Weight (lbs): 1
Dimensions (in): 3.5 x 3.5 x 3.5
MPN: B0007U00X0
Model: B0007U00X0
UPC: 085126201272
EAN: 0085126201272
ASIN: B0007U00X0
Availability: Usually ships in 1-2 business days
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| Features:
| • | 10-20mm ultra-wide angle lens designed exclusively for Canon digital SLR cameras | | • | 3 special low dispersion (SLD) glass elements to compensate for color aberration | | • | Hyper-Sonic Motor (HSM) produces silent, high-speed autofocus; full-time manual focus | | • | Multilayer lens coating reduces flare and ghost; 9.4-inch close focusing distance | | • | Measures 3.3 inches in diameter and 3.2 inches long; weighs 16.4 ounces |
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| Editorial Reviews:
Amazon.com Product Description
Designed exclusively for Canon digital SLR cameras, the ultra-wide-angle 10-20mm offers a view from 102.4 to 63.8 degrees, making it ideal for landscape photography and other vast applications. The lens is distinguished by its three special low dispersion (SLD) glass elements, which effectively compensate for color aberration, and its aspherical lenses, which provide maximum correction for distortion and various aberrations. As a result, the lens produces an extremely high image quality throughout the entire zoom range. The HSM-equipped models, meanwhile, produce fast autofocus (AF) speeds and quiet shooting while still letting you perform full-time manual focus. Other details include a minimum focusing distance of 9.4 inches at all focal lengths and an integral petal-type hood to block out extraneous light. Lens Elements and Coating
The new multilayer lens coating and lens design reduce flare and ghost--a common problem with digital cameras--while also creating an optimal color balance throughout the entire zoom range. At the same time, the lens offers three SLD glass elements that effectively compensate for color aberration, along with a piece of glass mold and two hybrid aspherical lenses that offer excellent correction for distortion and all types of aberration. Inner Focusing System and HSM
The lens incorporates an internal focusing system that eliminates front lens rotation, letting you use a petal-type hood to protect from additional glare. And models equipped with a Hyper-Sonic Motor (HSM) produce silent, high-speed autofocus and full-time manual focus for Sigma, Canon, and Nikon D-mount lenses. Best Consumer Lens
The Sigma 10-20mm lens is so respected that it was named the best consumer lens in Europe (2006) by the Technical Image Press Association (TIPA), a collection of 31 publications from 12 countries. According to TIPA, the 10-20mm lens offers a versatile range of wide-angle focal lengths, a good optical performance, and a budget price, making it an excellent investment for owners of DSLRs with APS-C format sensors. Its sharpness remains constant throughout the zoom range, and its compact size makes it an ideal companion for shooting travel, landscapes, or architectural subjects. - Lens construction: 14 elements in 10 groups
- Angle of view: 102.4 to 63.8 degrees
- Number of diaphragm blades: 6
- Minimum aperture: f/22
- Minimum focusing distance: 9.4 inches
- Maximum magnification: 1:6.7
- Filter size: 77mm
- Dimensions: 3.3 inches in diameter and 3.2 inches long
- Weight: 16.4 ounces
Product Description
10-20mm F4-5.6 EX DC HSM lens allows enjoyment of super wide-angle photography and it is a very powerful tool for indoor shooting and landscape photography with APS-C size image sensors of digital SLR cameras.Wide angle of view (102.4? at 10mm and 63.8? at 20mm) offers the photographer greater freedom of expression. Three SLD glass elements are employed for effective compensation of color aberration, which is a common problem with super-wide angle lenses. One piece of glass mold and two hybrid aspherical lenses, offer excellent correction for distortion, as well as all types of aberration.This lens is equipped with an inner focusing system, and the models which are equipped with HSM system provide quiet, high speed autofocus shooting and also offer full time manual focusing. It has a minimum focusing distance of 24cm (9.4") at all focal lengths. The non-rotating lens barrel perfectly suits the petal shaped lens hood. A circular polarizing filter can also be used conveniently.
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| Customer Reviews: Read 47 more reviews...
 bad......bad sharpness....... June 21, 2008
0 out of 2 found this review helpful
I used this lens for 1 week and took over a 200 photos in various shutter speed/aperture combinations; all of them turned out so-so to no good. The center sharpness is ok, but the sharpness and distortion of the image becomes unacceptable, starting about half-way to the image edge.
I don't believe I received a bad copy of this lens as a previous reviewer had as I didn't find one side of the image to be better or worse than the other and the autofocus seemed to be on target.
 SAVE SOME CASH June 18, 2008
SAVE A FEW HUNDRED DOLLARS, GET THIS INSTEAD OF THE 10-22 BY CANON, CANON IS THE BETTER OF THE TWO, BUT, NOT FOR THE MONEY, IF YOU HAVE LENS FEVER! THANKS, SIGMA.
 Great wide angle! June 12, 2008
1 out of 1 found this review helpful
I bought this lens because it was cheaper than the Canon version, and won an award in europe for the best consumer lens of it's kind. I use it with my Canon 30D digital SLR. It's very sharp, and feels great when shooting. Great Wide angle is you don't have one. Please note that this lens will ONLY work with a corresponding DIGITAL SLR.
fantastic June 2, 2008
1 out of 1 found this review helpful
This is my first "real lens". the Sigma EX line is a good place to start getting into quality glass. I was looking for something of a fisheye (maybe not that extreme) but definitely something wiiiiide.
This fits the bill very well. It is not the most extreme angle but it really captures depth/space in the frame and creates an interesting look. You'll learn to be aware of your entire environment as the wide angle can capture things on the extreme periphery. It makes scenes more lively, i had my sister shoot with this lens at a wedding reception with some very entertaining results.
Only concern is that this is an f4 lens compared to Canon's L series wide lenses that hover around f2.8. But then you'll spend over twice as much!
Nice price for a great lens May 28, 2008
1 out of 1 found this review helpful
Sigma continues to impress me. My one pricey Canon-brand lens (28-70 f/2.8 L) has color-fringe problems, and my two Sigmas (this one and the very sweet APO 70-200 f/2.8 EX DG HSM) are dead-on correct and free of chromatic aberration. My chief complaints about this lens are fairly irrelevant since they center around its inherent design:
1) variable aperture (makes you have to change your flash settings if you shoot manual)
2) it's not a f/2.8 lens
I was aware of these design specifications (not issues or surprises) before buying and am pleased with it despite them. That's the tradeoff you get for a great price.
It's nice to have a true wide-angle lens back in my arsenal, since the 28-70 combines with my 1.6x sensor size factor to become a 45-112, hardly wide.
To anyone considering buying the lens, just be aware that it's not for full-frame cameras. If you don't know what this means, or aren't sure what yours is, read the manual.
The field of view is an immense 102 side-to-side, and it focuses down to about 6" from the subject at 10mm.
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