Sigma 10-20mm f/3.5 EX DC HSM ELD SLD Aspherical Super Wide Angle Lens for Sony Digital SLR Cameras

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Price: $649.00    

Product Feature

• Super-Wide: 10-20 with maximum aperture of F3.5 throughout entire zoom range
• Includes: Petal-type Hood supplied

Product Description

Sigma Corporation is pleased to announce the new Sigma 10-20mm F3.5 EX DC HSM. This super-wide angle lens has a maximum aperture of F3.5 throughout the entire zoom range. With its wide angle view from 102.4 degrees it can produce striking images with exaggerated perspective. The maximum aperture of F3.5 is ideal for indoor shooting and it enables photographers to emphasize the subject. Two ELD (Extraordinary Low Dispersion) glass elements and a SLD (Special Low Dispersion) glass element provide excellent correction of color aberration. Four aspherical lenses provide correction for distortion and allow compact and lightweight construction. The Super Multi-Layer coating reduces flare and ghosting. High image quality is assured throughout the entire zoom range. The incorporation of HSM (Hyper-Sonic Motor) ensures a quiet and high-speed auto focus as well as full-time manual focusing capability. This lens has a minimum focusing distance of 9.4 inches (24cm) throughout the entire zoom range and a maximum magnification ratio of 1:6.6. The lens design incorporates an inner focusing system which eliminates front lens rotation, making the lens particularly suitable for using the Petal-type hood and polarizing filter. The Petal-type hood blocks extraneous light and reduces internal reflection.

Sigma 10-20mm f/3.5 EX DC HSM ELD SLD Aspherical Super Wide Angle Lens for Sony Digital SLR Cameras Review

When I bought the Sigma 10-20mm f/4-5.6 EX DC HSM Lens for Nikon Digital SLR Cameras 14 months ago, I didn't know what to expect. I never used a 3rd party lens or an ultra wide-angle, but I quickly learned to love the lens and the opportunities it created. Having said goodbye to the lens a week ago (still kicking), I decided to give this new slightly faster model for a spin.

Currently reviews or even sample photos are sparse, and even some details seem elusive, so lets start in the beginning:

* Like the predecessor, this model features HSM, so all Nikon DSLR users can benefit from this lens (D700, D3, and D3x users will only get a cropped view)
* Also like its predecessor, its a hefty well-built lens that's made in Japan
* It's comparable in size and weight to the original, but the 82mm front threads take some getting used to
* While the older model did not extend at 10mm and extended barely at the "long" end, the new one is flush from 16-13mm, and extends slightly at both the wide and the long end.
* the EX finish is a tad more refined, and it now features an AF/MF switch (full time override is available in AF). The focus ring is somewhat stiff, but has a nice movement to it. AF is blazing!
* Sigma seems to have revised the rear element a bit with an added piece of plastic to minimize reflections
* You also get an extra aperture blade for better bokeh and much better sunstars
* Just in case you are wondering, this lens works just like a Nikon lens with full functionality

I'll post photos, but in general its the equal or better to the earlier lens. At the wide end the extra 1/3 stop is barely worth mentioning, but at the wide end, you get 1 1/3 stop more light. The changes do go beyond that, as there now is ELD glass as well as SLD (in the previous version), and there is more aspheric glass. If this doesn't mean anything to you, just know this all helps it be a great lens!

This is a very challenging focal length to design for, especially if cost and size are a concern, so there is no perfect lens in this range. That being said, Sigma seemed to have used their experience with a previous 10-20mm to create a highly refined and very capable lens. If shooting at f/3.5 you will see some softness in the corners, but frankly it's not that limiting. Stopping down to f/5.6 helps a lot with gains in between, and it peeks at f/8-11 (maybe f/13 on a 6mp sensor).

Coming from an 18-## zoom? You'll get a whole new perspective, an opportunity to explore a new world of photography, and get to work with a lens of much better construction than a kit lens.

Coming from another ultra-wide angle? It may not be worth the switch (I sold my other one for a variety of reasons), but you almost get the speed of the Tokina AT-X116PRDXN AT-X PRO DX 11-16mm Ultra-wide Angle Lens for Nikon and you get a faster aperture and more useful zoom range than first gen ultra-wides such as the Nikon 12-24mm f/4G ED IF Autofocus DX Nikkor Zoom Lens or Tokina AT-XAF124DXN 12-24mm Wide-Angle Lens for Nikon.

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