Product Description

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Product Details

• Brand: Sigma
• Model: B0007U0H06
• Dimensions: 4.90" h x 5.40" w x 5.60" l, .95 pounds

Features

• Designed to fit Nikon digital SLR cameras
• 30 mm focal length
• 2 low-dispersion glass elements; glass mold aspherical lens element
• 45-degree angle of view
• 15.7-inch minimum focusing distance

From the Manufacturer

This large aperture 30 millimeters f1.4 EX DC HSM lens is designed to match the APS-C size image sensors of digital SLR cameras. Two SLD glass elements are especially effective in the compensation of magnification chromatic aberration.

Glass mold aspherical lens at rear group of lens reduces color aberration and provides high-quality image results.

From 40 centimeter (15.7 inches) minimum focusing distance to infinity, this lens creates very sharp images with high contrast.

The HSM models provide quiet high-speed auto-focus shooting, as well as full time manual focus. Large maximum aperture of f1.4 can perform superbly in a great range of applications, including snapshots, portraiture, indoor shooting and landscape photography.

• Large maximum aperture of f1.4
• The most appropriate coating for digital SLR cameras
• Two SLD (Special Low Dispersion) glass elements and an hybrid aspherical lens, provides the utmost correction for all types of aberrations
• Equipped with HSM (Hyper Sonic Motor) system

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

Great little lens.
This is a very sharp lens and is perfect for low light photos as well as portraits. I use this lens with my Nikon D300 and I am extremely pleased with the results. It is the best Sigma lens that I own.

Fast, but very flawed
The Sigma 30mm is a solid lens, and feels like a professional Nikkor lenses in its build quality. It is heavy, has a metal mount and plasticized metallic exterior. However that is where the comparisons to a high quality, professional lens end.

This lens underperforms in several regards. First, it has the at this point well documented focusing issue. In addition, it constantly overexposes pictures on my D80. I am not the only one to experience this problem. (Google Ken Rockwell's review). It is fast, and it CAN produce a great image, but getting there requires me to use manual focus, and set my D80 to a -.7 exposure adjustment. For a so-called professional lens, this is simply not acceptable.

I now use this lens only when I have to: when I can't use a tripod in dim interiors, or at dusk & when I don't need auto focus.

I would not recommend this lens to anyone unless you really have to have the speed and don't care about the focus and overexposure problems.

Honestly, I am surprised there are so many glowing reviews of this lens.

Autofocus with D40!
I purchased this lens to replace my Nikon 50mm f/1.8 prime. While the Nikon lens was fine, the lack of autofocus made it too challenging to take photos of dancers or musicians in low light (my primary use for the lens). With this Sigma 30 mm on my Nikon D40 (effectively a 45 mm lens on this camera due to the sensor size) not only do I get a faster lens (wider aperture) but I get autofocus due to Sigma's HSM. My early results (links below) have been good, with no problems.

PROS: fast, great depth of field range, very sharp images, autofocus on D40
CONS: heavy on D40 body, 62mm filters means none of my existing 52mm filters fit

Links to samples:
http://eyedance.blogspot.com/2008/07/new-toy.html
http://eyedance.blogspot.com/2008/07/la-fete-de-marquette.html