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 digital SLR cameras. Wide angle of view (102.4 degrees at 10mm and 63.8 degrees at 20mm) offers the photographer greater freedom of expression. 3 Special Low Dispersion (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 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. Angle of View - 102.4 - 63.8 degrees 6 Diaphragm Blades Minimum Aperture F22 Minimum Focusing Distance - 24cm/9.4 inches Maximum Magnification - 1 - 6.7 Filter Size - Diameter 77mm Lens Hood Petal Hood Dimensions - Diameter 83.5mm x Length 81mm, 3.3 x 3.2 inches Weight - 470 gram (16.6 ounces)

Product Details

• Brand: Sigma
• Model: B0007U00XK
• Dimensions: 3.50" h x 3.50" w x 3.50" l, 1.04 pounds

Features

• Super wide-angle lens designed for Nikon digital SLR cameras
• Hyper Sonic motor
• 10 to 20 mm focal length
• 14 elements in 10 groups
• 3 special low dispersion and 3 aspherical lens elements

From the Manufacturer

The 10 to 20 millimeters f4 to 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 degrees at 10 millimeters and 63.8 degrees at 20 millimeters) 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 24 centimeters (9.4 inches) 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.

• It covers a superwide angle of view 102.4 to 63.8 degrees
• Three pieces of Special Low Dispersion (SLD) elements and three aspherical lens elements produce top quality optical performance.
• Inner focusing system ensures the length of the lens remains unchanged whilst controlling aberrations.
• Equipped with HSM (Hyper Sonic Motor) system
• Minimum focusing distance of 24 centimeters (9.4 inches) at all focal lengths
• Relatively compact, lightweight for an ultra wide-angle zoom lens

Note to customers: Vignetting will occur if the lens is used with digital cameras with image sensors larger than APS-C size or 35mm SLR cameras.

Customer Reviews

Excellent bang for the buck
Excellent optical performance for the money you pay. Build quality is very good, solid and heavy. I recommend this lens if you're on a budget. Also, its the only one so far with built-in motor (a must for D40, D40x and D60 owners).

A bit soft on the left side
The build quality is good and it focuses fast. It's a fun lens to shoot with. I'm happy with the center sharpness but my only gripe is that under certain conditions the photos turn out noticeably soft on the left side.

Other things you might have missed
I am an active amateur who has done photography for some of the state parks where I live. I shot film for years and recently got into digital work just recently. I just purchased this lens and am very excited to get out to use it. I've done a few shots around my home and I'm quite thrilled with the results.

I'll leave all the technical details to others who have covered them quite well on this and other sites.

But I did want to mention a few things that are not covered or are misrepresented in the reviews you'll see in other places.

- The lens comes with a fairly nice soft case. This is a big plus for me since I like to store my lenses in cases while not in use.
- The lens shade is of very high quality. It also fits snugly.... much better than the Nikon shades which tend to fall off far to easily. I also like the way it attaches. The markings are clear and it easily fits on and tightens as you turn it. There are no cheap latches to worry about breaking.
- There have been many comments made about the lens caps. Ignore them. The front cap is very similar to that Nikon provides. I don't see much of a difference. The rear cap fits much better than the Nikon variety. You will have to note the dot and align it with the corresponding mark on the lens. It has a very tight fit and I actually like it much better than the Nikon branded rear caps. You will have to look at it though to put it on.