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Home >> Digital Camera Accessories >> Lenses
Sigma 10-20mm f/4-5.6 EX DC HSM Lens for Pentax and Samsung SLR Cameras | List Price: $569.00
Discount Price: $498.00
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Brand: Sigma
Binding: Electronics
Release Date: 2006-05-04
Features: - 10-20mm ultra-wide angle lens designed for Pentax and Samsung 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
Very good lens. If you can focus it correctly. [Posted on 2008-03-17]
My first impression when I received a package with this lens was "Wow!".
This lens is very well built and it comes with a dedicated case.
There was an extended warranty from Sigma included with the lens in addition to the standard one. If I remember well, it was 4 or 5 years in total. Very good, Sigma!
The Sigma 10-20 mm f/4-5.6 EX lens for Pentax mount looks different from the picture on Amazon. It does not have the window for scale, instead the last one is just painted on the barrel. And certainly it is not HSM, but a "screwdriver" type.
It mounts and locks on my *istDs and K10D easily. Surprisingly, I still can rotate the lens in the mount (in locked position) to a small but noticeable degree. It seems that the lock mechanism on this lens has "extended" tolerance and/or the mount coupling lens-body is not tight enough. This is a bit annoying. The zoom barrel is stiff in operation, so it happens to me to push it a bit harder and so turn the lens in the mount.
Now a few words about the optical quality of this lens.
I read many reports stating that their copy of the lens was good, as well as the ones stating the opposite.
Although my copy of this lens is not as sharp as my prime lenses (which was expected), it is good. But there is one "BUT".
My lens is sharp provided it is focused correctly. This is something difficult to achieve in certain situations and especially at wider angles. With this lens the AF tends to lock elsewhere, but not on the subject. And often there is no consistency - even if I focus several times on the same subject which is 3 meters away, the AF may lock anywhere from 1 m to infinity.
I am not sure if this is the lens or the camera AF system which causes such behaviour. In most cases I just set the distance manually and rely on the DOF.
A real wonder [Posted on 2008-06-02]
Just perfect, wonderful pictures at an affordable price. the distortion is a real very minimal. I also have the PENTAX Fish-eye objectief smc DA 10-17mm f/3,5-4,5ED (IF), but that is pure for fun.
Amazing lens! [Posted on 2008-07-05]
I've had this lens for four months now. I wanted to get a good feel for it before I signed off on it.
I have been completely impressed with this lens on my K10D. At 10mm, the lens is super wide, but doesn't distort images like a fisheye lens would, unless you get very close to your subject. At 20mm, there is very little noticeable distortion.
This lens is extremely sharp when shooting with a medium aperture, much sharper than I would have hoped for.
Overall, this is an incredible lens, and well worth the money.
Incredible Lens - Incredible Value [Posted on 2008-07-26]
I've only had this lens for about 24 hours, and it's already one of my favorites.
The build on this lens is magnificent. It feels very sturdy, and has a beautiful matte black finish that looks very sharp and professional. It includes a lens hood and padded cloth case, both of which are of a similarly high quality. (I'll add pictures of the lens, hood, and case later on.)
The angle of view from this lens is breathtaking. Just from the few test shots I've done in my apartment I'm astounded at how much of the space this lens is able to capture, with almost no distortion at all. Most lenses with this wide an angle would show significant fish-eye distortion, but this lens does a virtually flawless job of correcting those distortions and providing sharp, accurate images with a wide field of view.
I did a lot of comparison shopping before deciding on the Sigma 10-20, and this lens is everything I had hoped for and more.
If you're interested in getting an ultra-wide-angle lens on a budget you will not be disappointed with this one.
Click here for more details and discount information...
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