Sigma 10-20mm f/4-5.6 EX DC HSM Lens for Canon Digital SLR Cameras
by SIGMA
Our Price: $479.00
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Category: Digital Camera
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Digital Photo Product Details
Manufacturer: SIGMAModel: B0007U00X0
Product 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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Digital Cameras Photo Reviews of Sigma 10-20mm f/4-5.6 EX DC HSM Lens for Canon Digital SLR Cameras
Customer Review: High Quality Doesn't Have to Equal High Cost
Summary: 5 Stars
I wanted an ultra wide angle lens for my new Canon EOS 40D, but I didn't have the money to purchase a high cost Canon ultra wide lens. Careful research kept pointing to the Sigma 10-20mm f/4-5.6 EX DS HSM lens. At 4 to 5.6, this lens is slightly dark, but for an outdoor lens I figured lighting wouldn't be much of an issue. With a range of 10 to 20mm I decided this lens would offer very wide shots and near fish-eye creativity capabilities.
I always buy only Canon lenses, but I don't buy the professional level models. After all, I am a photo hobbyist, not a professional photographer. Well even though I really wanted to purchase a quality ultra-wide angle lens, I was low on funds due to recently over spending on Christmas gifts for my friends and family. Although I wanted to buy a Canon ultra-wide, I just didn't have that kind of cash. I read several rave reviews on this Sigma 10-20mm lens so I ordered one up. I haven't had it very long but I have taken several photos with this lens and so far I am quite impressed. At 10mm you do get some curved distortions, giving a bit of a fisheye effect. This can be good or bad, depending on what you are looking for in your shot. As another reviewer pointed out, this effect can make clouds look wonderful. This is an EX series Sigma, with a super fast HSM auto focus. The focusing is quick and accurate. The filter size is 77mm, which is HUGE, and filters can be quite expensive, but for what you save on the cost of the lens you can afford to invest in quality UV and polarizer filters. This lens is also fairly light weight and very classy looking. The shiny gold ring is a nice touch indeed. I also really love the fact that this lens comes with a lens hood and a nice padded case.
I only have a couple of minor complaints, neither of which would cause me to reduce my rating. First and most distracting is the fact that the focus and zoom rings are reversed, compaired to the Canon lenses, so I find myself constantly adjusting focus when I mean to adjust zoom. This is something that I will get used to and certainly does not affect the overall quality of the lens. Secondly, with the lens stored in its squarish, padded case, it makes the whole package a bit large and I cannot fit it in my camera bag.
So, with all of this being said I have to give this Sigma EX series 10-20mm lens a solid 5 stars. The optics produce quality photographs, the overall feel of the lens is perfect, and the price is substantially less than the closest Canon equivalent. 5 stars may seem a bit high to some people, who feel that only the most perfect, professional lenses deserve this high of a score. But I feel that the quality and performance of this lens merrits a perfect score. For the average consumer photographer there just isn't a better ultra-wide lens on the market today. It even scores better than the Canon ultra-wides! I couldn't be happier with my new Sigma EX 10-20mm, and I highly recommend it to anyone looking for an excellent ultra-wide lens.
Description of Sigma 10-20mm f/4-5.6 EX DC HSM Lens for Canon Digital SLR Cameras
Sigma - Sigma AF 10-20mm F4-5.6 EX DC HSM for CANON - 201101Designed 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
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