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

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77% Tried & Tested
Optically the lens is a solid if not outstanding performer, build quality is up to Sigma's usual standards, and the focusing is indeed fast, silent and accurate.”

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Key Features

  • 10-20mm focal length
  • 15-30mm equivalent focal length on APS-C cameras, 20-40mm equivalent focal length on Four Thirds / Micro Four Thirds cameras, 16-32mm equivalent focal length on Canon APS-C cameras
  • F4-5.6 maximum aperture; F22-32 minimum
  • Ring-type ultrasonic-type AF motor with full-time manual focusing
  • 77mm filters
  • 0.24m/9.45" minimum focus
  • Available in Canon EF, Four Thirds, Pentax KAF, Sony Alpha, Sigma SA, Nikon F (DX) mounts

Product Description

The 10-20mm F4-5.6 is the cheaper of two Sigma lenses covering the ultra-wide angle range for APS-C SLRs (the other offers an F3.5 constant maximum aperture). It’s a solidly-made lens with fast, silent autofocus, and available in versions to fit every SLR on the market. It’s probably better suited to landscape work than architecture, due to fairly strong barrel distortion at wide angle.


Principal specifications
Lens type Zoom lens
Max Format size APS-C / DX
Focal length 10–20 mm
Image stabilisation No
Lens mount Canon EF, Nikon F (DX), Pentax KAF, Pentax KAF3, Sigma SA Bayonet, Sony/Minolta Alpha DT
Maximum aperture F4.0 - F5.6
Minimum aperture F22.0 - F32.0
Aperture ring No
Number of diaphragm blades 6
Aperture notes rounded blades
Elements 14
Groups 10
Special elements / coatings 3 SLD glass elements 2 hybrid aspherical elements 1 glass mold aspherical element
Minimum focus 0.24 m (9.45)
Maximum magnification 0.15×
Autofocus Yes
Motor type Ring-type ultrasonic
Full time manual Yes
Focus method Internal
Distance scale Yes
DoF scale Yes
Weight 470 g (1.04 lb)
Diameter 84 mm (3.29)
Length 81 mm (3.19)
Materials metal mount
Colour Black
Zoom method Rotary (extending)
Filter thread 77 mm
Filter notes does not rotate on focus
Hood supplied Yes


DPReview Conclusion

Scoring is relative only to the other lenses in the same category at the time of review.

Score Breakdown
Poor Excellent
Build Quality
Ergonomics and Handling
Image Quality
Tried & Tested
Tried & Tested
77 %
Overall Score

Overall the Sigma 10-20mm F4-5.6 EX DC HSM is a solid, well-built lens with good operational characteristics, which justifies its popularity with generally decent imaging results. While its long-running, unique selling point of being the only third-party 10mm zoom has now disappeared, and it faces strong competition from Tamron's 10-24mm, the different characteristics of the two lenses means it's still a good option for APS-C users looking for the widest of ultra-wideangle zooms.

Good For

Cropped sensor shooters looking for an affordable, well-built super wide-angle zoom lens.

Not So Good For

User Reviews

  • mr vigo, Jan 6, 2013 GMT:
    Great-sharp-quite-nice price

    acteally its my amazing lense i found it most great lense than canon its a nice price & perfect lense & beauty color altogh its from big company in lense made the lense is the 2d place after Tokina

    Continue Reading

  • Jose Rocha, Nov 23, 2011 GMT:
    My quick review

    This lens could be better for the price I paid at the time (€510). I like this lens a lot for the professional feel, colors and of cours the wide angle. Optically my copy has a flaw and unfortunately I noticed it too late. Pros: - Good (not great) sharpness at most of the frame. My copy is decentered and doesn't give justice to it, but the sharpest side of the frame is good at f/5.6. I normally use it at f/8 or f/11 and the sharpness improves significally. - Like my Nikkor 35mm f/1.8, this ...

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  • fastHID, Nov 4, 2011 GMT:
    a great wide angle zoom

    After reading plenty of reviews, I bought this lens for HDR landscape photos on my Canon 60D and it indeed is a fine lens. Feels very solid, autofocus is very fast, zoom is smooth, manual focus very smooth too. Have done some great interior shots, minimal distortion and only on the wide end. Great lens for the money too. No regrets. After months of outdoors use, no dust at all internally. Fits the body well too. Problems: none.

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  • whyukon, Aug 13, 2011 GMT:
    A top pick

    I carefully researched and read all the reviews of available super-wide zooms before settling on this one. There is a lot of choice now, and each lens seems to have its own strengths and weaknesses. However, in my opinion, this lens is still a standout. The construction quality of this lens is far beyond what one would expect for a lens of this price. It feels incredibly solid, like the high-quality prime lenses of many years ago. Both the zoom and the focusing ring are very ...

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Questions & Answers


From D5000 to D610 or D810, what will fit me better?

I have been shooting with my first DSLR (D5000) since 2009. I am not a pro, just use the camera on my business travels and with my Family (mostly my kid nowadays). My lenses are 35mm 1.8G, Sigma 10-20 and Tamron 90mm f2.8. I believe only the Tamron supports full frame. I believe going to D7100 will not add much since D5000 is already a great camera and the next step would be going to full frame. My budget is around 3.5k (after selling a CAM recorder from Canon) for the body and 1 or 2 lenses. If I go to D810 I will probably get the 50mm f1.8G. If I go with D610 I would probably get either the 28-70mm f2.8 or the 50mm f1.8G + Nikkor 18-35mm. Thanks!

rpabech asked
5 months ago


Based on your lens choices and what you shoot I will go for D610. D610 files will be a lot easier to manage than D810. Continue Reading

amobi answered
5 months ago

My requirement specs seem similar to yours: Mostly kids (4 and 1.5 years old), some nature and landscapes. I do own and use by now: D5000 and D600. Lenses: 18-105(dx), Sigma 35Art and Tamron 70-200/2.8 There's what i think: Update to an D7100. The sensor is a huge step forwards plus: You dont have to touch your lenses. If you do a mayor upgrade now, you will miss too many shots, *because you are fiddling with your gear*. Believe me, i know exactly what i'm talking about. Changing lenses and esp. zoom ranges takes a learning curve. You probably don't have that time. D7100 is a plug and play update. It will enhance everything while the impact to you and your gear is not that big. If you want to sink more money, in addition take your family to paris and see how well it works. -Armin PS: Continue Reading

Armin Hermann answered
4 months ago

I hesitate a little to jump in because I've never shot with a D800 (or 800e or 810). But I've shot with a D610 and a Df (and now own the Df). But my general feeling is that you shouldn't get the 810 unless you KNOW you want that camera and know WHY you want that camera - I sort of feel the same way about the D4s and Df too. If you want one and know why you want it, it might be the right choice for you, but if you don't, I think the D610 is a pretty great all-around full frame sweet spot to start off with. The D610 is very similar to the D810 in terms of imaging characteristics but it's a bit more forgiving of both the photographer and the lenses one might stick in front of it by virtue of being 24mp rather than 36mp. The AF isn't quite as good, but I find it more than wonderful as I'd guess you would too coming from the D5000. And 24mp is still a LOT of detail - probably already more than the vast majority of us can really benefit from - and the dynamic range and low light ... Continue Reading

Ray Sachs answered
4 months ago


Which Ultra Wide Angle?

I would like a lense with a zoom range wider than my old (and faulty) kit lense, but do not know which one to get. Do I buy a Sigma 10-20, a Tamron 10-24, or save up for something more expensive? Just looking for some advice Thanks!

AidanGale asked
3 months ago


No. Get something less expensive! Go for the Canon EF-S 10-18mm f4.5-5.6 IS STM. Great little lens, better than the ones you mentioned, very light and very affordable. Continue Reading

brightcolours answered
3 months ago

Like I said, the 10-18mm is better in IQ than the two or so (3, there are two different Sigma 10-20mm versions) lenses you mentioned. So, that is my (good) advice, just go for a new Canon EF-S 10-18mm f4.5-5.6 IS STM. Better and faster AF, better sharpness, lighter, cheaper, IS. Continue Reading

brightcolours answered
3 months ago

Well, very strong CA, very bad trying to focus with live view contrast detect AF. That is two faults ;) Continue Reading

brightcolours answered
3 months ago


D7100 Lens for Milky way shots and Astrophotography

I’m looking at a purchasing a wide angle lens for milky way shots and general astrophotography and some time lapse work if possible. I have done a bit of research on the tokina 11-16 and the sigma 10-20mm line of lenses that fall well within my price point. I’m still unsure about which would yield better results or if there are other lenses available that would work in this situation. I don’t mind going for a prime lens but I am looking for super wide angle, max 20mm but would rather go towards 10mm. I am also looking at a Tamron 16-300mm that I may be able to do some stacking shots with of distant objects and a few moon shots, but this lens would be my daily use lens. I don’t mind stacking images but having a lens with a good enough aperture for single take shots would be nice. So what iam looking for is a good camera body, wide angle wide aperture lens and a small amount of telephoto zoom work onto star clusters and nebula. The budget would be around $2500 excluding accessories. ...

Seb22 asked
4 days ago


Warranty Information

"Beginning July 1, 2013, all brand new Sigma Products purchased from authorized Sigma dealers are covered under the 1 year America warranty (North and South America) and U.S.A. extended warranties for a period of three (3) years against defects in manufacturing and workmanship only. Your warranty period begins the day you purchase your Sigma camera, lens and/or flash and runs for a total period of four years from that date (please refer to the warranty policy included with your product)."

Go to Sigma's warranty registration page for more information and to register your Sigma product. DPReview GearShop is an authorized Sigma dealer in the United States.

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