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Sigma 10-20mm f/4-5.6 EX DC HSM Lens for Canon Digital SLR Cameras by Sigma Corporation
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Digital Photo Product DetailsManufacturer: Sigma Corporation Model: 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
Accessories:
Digital Cameras Photo Reviews of Sigma 10-20mm f/4-5.6 EX DC HSM Lens for Canon Digital SLR CamerasCustomer Review: The best non-Canon lens I've ever used! Summary: 5 StarsI've owned many lenes of all different brands but most of which have been Canon L series. This was my first time to own and use a lens from Sigma. The Sigma 10-20mm f/4-5.6 EX DC HSM copy that I bought here on amazon is as close to an L series lens as I have ever used. I reserched many lenses from Canon, Sigma, Tamron, etc. and I was concerned that because the Sigma lens is not a Canon brand that it might have communication issues with my Canon 20D body as some of the other non-Canon brand lenes I've used. So just as soon as I got it I put it to the test. I am thrilled to say that it passed with flying colors. This lens focuses nearly as fast as my Canon 17-55mm f/2.8 IS USM and is tack on and very sharp. The focus ring and the zoom ring are both very smooth. The velvety coating on the lens barrel feels very nice. Other reviews I've seen complain about the noise from the Sigma lens. I hardly noticed any even shooting in an empty house. The noise during focusing is a little more noticable that my Canon lenses but certainly not a deal breaker if trying to decide on wich brand of lens to purchase. I use this lens mainly shooting real estate interior shots and so using it at it's widest angle is where it spends most of it's time. So in these situations there is three main things I needed from this lens:
- Sharpness - I've already said it, It's sharp!
- Controlled C/A - Very little to none I am very impressed and happy here!
- Controlled Barrel Distortion - This is a little more pronounced that the Canon EF-S 10-22mm f/3.5-4.5 USM that I was renting but again not a deal breaker in my opinion and I feel it is still very well controlled.
I love my Canon lenes but for anyone looking to save a few hundred bucks on a ultra wide angle lens, you will not be disappointed by going with the Sigma 10-22mm EX DC HSM.
Description of Sigma 10-20mm f/4-5.6 EX DC HSM Lens for Canon Digital SLR CamerasDesigned 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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