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Sigma 10-20mm f4-5.6 EX DC Lens For Sigma Digital SLR Cameras

by Sigma

RRP: £549.99
Price: £343.18 & FREE Delivery in the UK. Details
You Save: £206.81 (38%)
Only 2 left in stock (more on the way).
Dispatched from and sold by Amazon.
4 new from £323.90
  • A super wide-angle zoom lens designed for digital cameras with an APS-C size sensor
  • 3 special low dispersion glass elements and 3 aspherical elements for optimum quality
  • Super multi-layer lens coating to reduce flare and ghosting
  • HSM motor for silent high speed focusing
  • Full time manual focusing
  • Internal focusing
  • Non rotating front element
  • Compact and lightweight
  • Extended 2 year UK warranty

Claim a Free Sigma EF-610 DG ST Flashgun with this Sigma Lens
Purchase this product before 31 January, 2015, and claim a free Sigma EF-610 DG ST flashgun from Sigma.This product must be bought from Amazon.co.uk and not a third party merchant on the Amazon platform--please check before adding to your Basket. Terms and conditions apply. Learn more.

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Product details

  • Product Dimensions: 8.1 x 8.4 x 8.4 cm ; 472 g
  • Boxed-product Weight: 780 g
  • Item model number: B0007U00XA
  • ASIN: B0007U00XA
  • Date first available at Amazon.co.uk: 16 Jun 2007

Product Description

Near-Far effect helps to push and pull subjects to give a longer field of view

Near-Far effect helps to push and pull subjects to give a longer field of view

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Sigma 10-20mm f/4-5.6 EX DC HSM Lens

Produced in the legendary Aizu facility in Japan, Sigma presents their 10-20mm f/4-5.6 EX DC HSM Lens. Building on 50 years of innovation in precision optics design and craftsmanship, the 10-20mm is an ultra wide angle zoom lens which encompasses several advance features designed to counter commonly found optical aberrations. Deep and ultra sharp images are produced as a result, making it a great value all round offering to any budding photographer.

The Lens Design

Design features make up the foundation of the Sigma 10-20mm lens. Measuring just 8.1cm x 8.4cm and weighing an acceptable 470g, it is both lightweight and compact for its focal class, making it easy to handle but at the same time feel balanced when mounted on a DSLR. The lens features Sigma’s in-house developed inner focus system, which both eliminates the need to extend the barrel, reducing light loss, and the need to rotate the front lens. In staying fixed, the front lens can accommodate a petal design hood (included) that helps to counter light related issues such as glare. The inner focussing system also allows for the use of Circular Polarising filters.

Hyper Sonic Motor ensures fast, accurate and quiet auto focusing

Hyper Sonic Motor ensures fast, accurate and quiet auto focusing

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The lens features Sigma’s exclusive Hyper Sonic Motor (HSM) which works to auto focus images in a fast, accurate and silent manner. If preferred, a full time manual focus function is also available. The lens is manufactured to Sigma’s high standards with the body constructed from strong but lightweight polycarbonate, layered in a hard-wear paint finish.

The Ultra Wide Angle Effect

With a small variable focal length from 10 to 20mm, this rectilinear lens is capable of capturing ultra wide angle images (102.4° to 63.8°) which become “exaggerated” in perspective. Thanks to higher aperture settings (f4-5.6), the depth of field appears greatly increased giving the added benefit of keeping all subjects in focus despite their varying distances. This effect also creates a near-far relationship where backgrounds seem to be pushed further away to make them appear smaller and closer subjects pulled nearer to make them appear bigger, creating a unique “stretched” effect. With a close focus distance of just 24cm, which stays consistent through all the focal lengths, you can capture subjects in their entirety whether standing close up or composing the image from a tight space. In anticipation of the regular inclusion of bright light sources (e.g. the sun), Sigma have also designed the lens to better cope with the undesirable effects of flare and glare.

3 SLD and 3 Aspherical lens elements help to counter various colour and optical aberrations

3 SLD and 3 Aspherical lens elements help to counter various colour and optical aberrations

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The Optical Composition

In all forms of lens construction, Sigma puts the highest emphasis on the quality and craftsmanship of the internal optics. As a result, the 10-20mm incorporates a set of cutting edge and unique optical features which work to create bright and sharp images. Three out of fourteen lens elements are manufactured from Special Low Dispersion (SLD) glass, renowned for its high resolution and light transmission properties. They work in conjunction with one glass mould and two hybrid aspherical lens elements to counter various colour and optical aberrations which are commonly found in ultra wide angle lenses, such as chromatic aberration. Furthermore, the configuration also ensures that all levels of distortion are corrected. The resulting images speak for themselves in terms of sharpness and resolution.

Super Multi Layer coatings work to eliminate flare and ghost irregularities

Super Multi Layer coatings work to eliminate flare and ghost irregularities

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Finally, Sigma applies Super Multi Layer coatings to all lens elements, which work to create an optimum colour balance by reducing the damaging effects of ghost and flare. They also help to maximise light transmission to the DSLR’s sensor.

A Lens Most Applicable For......

With an achievable focal length between 10-20mm and multiple specialist optical features, this Sigma lens is a perfect match for any photographer who would like to compose images with an ultra wide angle perspective*. Accurately, quickly and consistently these wide angle images can be produced both indoors and out, all with the same stunning results. Landscape and architectural photography are therefore perfectly suited to this type of lens. Furthermore, thanks to a permanent close focus distance and a high speed auto focus system, the lens would perform well in various forms of close-up photography. Finally, the compact and lightweight (for its class) design combined with the silent focus function, make the lens both portable and stealthy meaning it would work well when used out in the field accommodating wildlife photography as well as other specialist outdoor pursuits.

* only suitable for cameras with an APS-C size sensor

Customer Questions & Answers

Customer Reviews

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Most Helpful Customer Reviews on Amazon.com (beta)

Amazon.com: 538 reviews
348 of 358 people found the following review helpful
I didn't plan on buying this lens but I am glad I did 21 Oct 2006
By Craig 1959 - Published on Amazon.com
I went into a local camera store to look at the Nikon 12-24mm wide angle zoom to eventually augment the Nikon 50mm 1.8 and 18-200mm VR I currently use on my D200. After seeing the Sigma 10-20mm, taking test shots with it and the Nikon, and then printing the shots in the store, I walked out with the Sigma lens.

I had planned to buy the 12-24mm Nikon next Spring when my budget would allow the expenditure. I have had success with Nikon optics in the past - starting with my first Nikon FM back in the seventies. The Sigma's good construction, nice finish, smooth+fast+quiet focusing and 10mm focal length convinced me to try my first non-Nikon lens in 30 years. A big factor: The Sigma lens is less than half the price of the Nikon lens here is Canada. It fit my budget, so I took the plunge.

The Sigma fits into my "sharp enough" category. In real world shooting, its sharpness is on par with my 18-200mm Nikon. Both lens are less sharp than my $100 50mm 1.8 when "test" images are blown up to 16"x20" size. I never notice any lack of sharpness in "real" pictures. I care more about color saturation, contrast and color balance anyway. In this area, the Sigma does well. Saturation and contrast are equal to both my other Nikon lens - particularly at f8 and smaller aperatures. Wide open, I find some weakening in contrast. The Sigma has a warmer color termperature than my other lens. One click toward blue in Photoshop would fix this minor variance in color. But I use my 10-20mm almost exclusively for landscapes. The warmer color is generally a good thing.

I have noticed some vignetting @ 10mm f4. Zooming to 12mm or stopping down to f5.6 elminates any artifacts in pictures I have taken thus far. I have found it's more important to avoid "thick framed" filters - and stacking filters is a no no with this lens. They cause more darkening than a wide open f-stop. BTW: I added a 72 to 77mm step-up ring to my 18-200m VR Nikon to allow me to share filters between my zoom lens.

I do miss having a manual/autofocus switch on the Sigma lens. I have accidently nudged the manual focus ring a couple of times. With that said, the incredible depth of field of this lens (or any lens at this focal length) means small focusing errors can be tolerated :)

I recommend this lens - even to people like me, who never had a non-nikon lens before.
552 of 576 people found the following review helpful
Could be 1 Star, Could be 5 Stars! Read More: 28 Feb 2009
By Jim Saueressig - Published on Amazon.com
Verified Purchase
I am rating this lens with only three stars because I am reviewing two lenses. Here is why:

When I received my lens I later realized that I did not receive the extended three year warranty card that comes with the USA versions of the lens. Instead of just sending me the extended warranty card Amazon shipped me a whole new lens. Now while I was reading reviews prior to ordering this lens I had seen many reviews where the reviewer either loved this lens or they hated it. After a while I could see why...

Some of the lenses that are being shipped are sharp all the way around while some are not sharp at all. Many claimed it was sharper at F:8 than F:4 while others said theirs was never sharp at all. Some complained about distortion and or dull or over saturated colors. I finally found a reviewer who had the opportunity to try 3-4 different lenses. They found that there seemed to be a lack of quality control all around when it came to this specific lens. Having a few days of both lenses I decided to compare them out for myself. I am glad I did.

I put my camera in the front yard on a tripod and shot numerous sets of three for each lens at 10mm, 14mm, and 20mm. The results were surprising. The original lens I had been sent first was a clear winner. The trees and anything else around the picture were sharp, The replacement lens was anything but sharp. The colors on lens two were more vibrant than lens one but one can fix that with software where a blurred image is not really fixable.

I shot numerous sets with both lenses and a few different F settings and the results remained the same. The replacement lens was the one being returned. Lucky for me the Sigma extended warranty cards have nothing on them, you enter the serial numbers yourself so I kept the card and returned the replacement lens.

I have included two photos to the gallery for this lens so you can see what I found. In the end my first lens would have received a 5 star rating because they really are excellent lenses if you can get a good copy. The replacement copy would have received a 1 star rating. Luckily I had the chance to compare the two copies side by side or I may have never known just how bad lens number two really was.

If your lens has problems like lens number two you have a poor copy of the lens, return it. Sadly from all of the reviews I have read it seems that maybe 20% of the lenses are not good copies. Many just think poor sharpness is just a general lens limitation when chances are it is just a poor copy they received.

Bottom line!

1. Get the lens out and shoot some shots, If it is not sharp around the edges return it for another copy.

2. If you do not get your extended warranty card you may have gotten a gray market lens. Return it.

Upon talking to a Sigma rep I was told they have no way to verify whether the lens is USA or Gray market (international) by the serial number, if you do not have the extended warranty card you will not get the warranty extension so buyer beware. The card is a card stock type black and red folded warranty card that specifically states that it is the extended warranty card. Don't let any dealer tell you that it has the extended warranty without it being in your hands. Sigma currently has no registration on their website. The rep told me to keep the card in a safe place and then in the event that I need service I will send it and a copy of the original sales receipt in with the lens for service.

All that being said I can tell you that this is a wonderful lens if you need a super wide angle lens and you get a good copy. They are not the fastest lenses around but for the money you cannot beat it.

Take a look at the pictures I included for the lens and hopefully they will help you determine if you were lucky on the Sigma draw and give you an idea of what you need to check for.
305 of 324 people found the following review helpful
best value wide angle. 9 Feb 2006
By K. Dardashti - Published on Amazon.com
there are currently 4 wide angle zoom choices available on the EF-S canon mount (d-rebel/xt/20d) canon 10-22, Sigma 12-24, sigma 10-20, tokina 12-24. Of these, sigma 12-24 is the only one which is usuable on a full frame sensor (canon 1d, 5d, possible future cameras). There is sizable difference in field of view between the 10 mm, and 12 mm. and the tokina is closer to 13 mm on its wide end. The sigma retails for about 2/3 the price of the canon. Optically they are very similar, with the canon having a larger maximum aperature, which is generally not important in a wide angle lens. The built construction is EX, they higher line of sigma, and it excellent. The focus motor is HSM, making it fast, and very accurate. Resolution chart show the sharpness to be very close to that of canon. The color and contrast is excellent, the flare and chromatic abberation genenrally well controlled. A fun lens to use, and excellent value.
58 of 60 people found the following review helpful
EPIC LENS 27 Sep 2007
By Damien R - Published on Amazon.com
Verified Purchase
Before purchasing this lens, I looked at the Nikon 12-24 and the tokina 12-24. Both were more expensive, and claimed to be be excellent performers. After comparing all three, the Sigma 10-20 was the hands down winner in my book for a number of reasons.

1. Packaging - Came in a very attractive box with a manual and included not only a lens hood, but a very nice lens case! Good Job Sigma!
2. Build - The lens feels tough and has a very attractive finish to it. The focus ring is nicely dampened and is very easy to modulate. My only gripe is that the lens cap is useless, get a nikon lens cap and youre all set.
3. Performance - The sigma is 2mm wider than its nikon and tokina counterparts and boy does it make a difference. The FOV is wide on my D50 and i can capture so much on one single shot that when people see them, their first words are "how the hell...". Distortion at the wide end is there, but is easily controllable through precise leveling or from post processing. You might see some vignetting at 10mm but just stop it down and you should be all set (or you can correct it with a click of the mouse in photoshop). I have heard complaints about sigma not having a constant aperture. In my opinion, who the hell needs it. When I am taking shots in the day, the natural light is sufficient enough. For night shots, i use a tripod and usually stop it down to F8-f10 where the sigma's optical performance is at its best. This is an amazing piece of glass and I encourage those looking for a wide angle lens to definintely take the sigma into consideration. Looking at Sigma's future lens lineup, I don't consider them to be a 'third party' lens company anymore. Sigma will definitely be considered on my next purchase for a telephoto lens.
55 of 59 people found the following review helpful
The Lens for Big Sky Country 30 Mar 2007
By kkrome25 - Published on Amazon.com
Verified Purchase
This 10-20mm lens is equivalent to a 15-30mm in a 35mm film camera, so it's an ultra-wide lens at 10mm. I was pleasantly surprised at how sharp the images are from this lens; and it's rectilinear, which means that straight lines in real life remain straight in the photograph. It is a well-made lens, made with high-grade materials. What this lens excels at is when you want to photograph sweeping landscapes, close-quarters interior photography, and in architectural photography where you don't mind the exaggerated converging lines that an ultrawide produces (and is typical of wide-angle lenses). You can also get close to the subject as well: 5 inches from subject to the front surface of the lens. By the way, if you're going to photograph in Big Sky Country, this is the one lens you can't leave home without. And, I suggest purchasing a graduated neutral density filter to balance out the luminance range between the sky and the landscape below. This great lens package comes with front & rear lens cap, lens hood, and a very nice cushioned & zippered lens pouch!
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