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FORUMS Canon Cameras, Lenses & Accessories Canon EF and EF-S Lenses 
Thread started 23 Oct 2012 (Tuesday) 09:31
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Sigma 10-20mm, which one f/4 or f3.5?

 
StillCrazy
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Oct 23, 2012 09:31 |  #1

There's $120 difference (after rebate) between the f4-5.6 and the f/3.5 versions of this lens. Is there any reason you'd spend the extra cash for a faster lens? Other than speed, I see no difference in the specs. My main use would be landscape, but I'd also try it on close up product work, in studio. I'm thinking I don't need a fast lens for my needs. Opinions?

Thanks for your advice.


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gep01
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Oct 23, 2012 10:34 |  #2

I've got the f4-5.6 version and to be honest for what I'm using it for, which is basically landscapes and architecture I don't often have my aperture below f8 unless it's dark. So unless the f3.5 is optically superior (and I don't know the answer to that) I personally would stick with the slower one. Maybe when shooting interiors it might come in handy though...


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TweakMDS
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Oct 23, 2012 11:08 |  #3

From what I've read, the only advantage of the f/3.5 version is that it's 1/3rd stop faster at the wide end, and 1 1/3 stop at the long end.
However, the f/4-5.6 version is cheaper, lighter and uses 77mm filters (HUGE advantage imho).

For a sharpness comparison see here: http://www.the-digital-picture.com …omp=0&FLIComp=0​&APIComp=0 (external link)

There's not much between them wide open at the wide end. At 10mm f/8, the f/4-5.6 version looks a TINY bit sharper, albeit with what looks like more distortion and vignetting. I practice you'll have to try hard to detect a difference. At longer focal lengths, the f/3.5 version looks to be taking the lead though.
Only if you plan to do astro photography, you might want to opt for the faster version, but I guess there's better lenses for that, like the Tokina 11-16 or the Samyang 14mm.

Between the Sigma 10-20's I'd go for the f/4-5.6 version.


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StillCrazy
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Oct 23, 2012 13:03 |  #4

Thanks for the replies. I do like the IQ of the f/3.5 version, but obviously I'm concerned about cost, or I wouldn't have asked the original question. It looks like I'll go for the f/4-5.6 version for what I'll be using it for. That way I can include the filters I need and stay within my budget price.

Do you use a hood with this lens for landscape work?


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pulsar123
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Oct 23, 2012 13:08 |  #5

From what I've heard, the f/3.5 IQ is somewhat worse than that of f4-5.6. See e.g. photozone.de reviews, which test both lenses on the same (Nikon) camera:

http://www.photozone.d​e …st-report--review?start=1 (external link)
http://www.photozone.d​e …s/467-sigma_1020_35_nikon (external link)

The older lens gets 3.5 stars, and the newer one gets only 3 stars in IQ.

So I'd say - save money and go with the slower lens.


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Oct 23, 2012 17:21 |  #6

I had the f/4-5.6 version. Did alot of landscape and HDRs with it, most of the time on the tripod, so I didn't need the f/3.5. I did use the hood with it all the time. My biggest complaint was the distortion that I had to correct in post - other than that, it was a great lens. Used it on the 50D and 7D.


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StillCrazy
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Oct 24, 2012 16:03 |  #7

I just ordered the f/4-5.6 version of this lens, and it should arrive early next week. I'll be leaving in two weeks for a trip to the Grand Canyon, and I hope to use this lens for landscapes there. Does the lens need adjusting, or should I expect it to be good to go right out of the box? I don't think I'll enough time to mail the lens back to Sigma for calibration and get it back in time for my trip.


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GregoryF
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Oct 24, 2012 18:01 |  #8

StillCrazy wrote in post #15164516 (external link)
I just ordered the f/4-5.6 version of this lens, and it should arrive early next week. I'll be leaving in two weeks for a trip to the Grand Canyon, and I hope to use this lens for landscapes there. Does the lens need adjusting, or should I expect it to be good to go right out of the box? I don't think I'll enough time to mail the lens back to Sigma for calibration and get it back in time for my trip.

Would probably depend on your copy. Mine was great straight out of the box.


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RobDickinson
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Oct 24, 2012 18:06 |  #9

Unless you need the extra speed get the slower one, its better smaller and cheaper.


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ZeroSkylineX
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Oct 24, 2012 19:21 |  #10

StillCrazy wrote in post #15158517 (external link)
There's $120 difference (after rebate) between the f4-5.6 and the f/3.5 versions of this lens. Is there any reason you'd spend the extra cash for a faster lens? Other than speed, I see no difference in the specs. My main use would be landscape, but I'd also try it on close up product work, in studio. I'm thinking I don't need a fast lens for my needs. Opinions?

Thanks for your advice.

You're a bit wrong on the specs, filter wise- it's bigger. The f/3.5 version requires a 82mm filter and the f/4-5.6 version requires a 77mm. I've previously owned the f/4-5.6 version and upgraded to the f/3.5. If you shoot mainly with good lighting, sure why not. But if you want speed, you can't compare with the Tokina 11-16 f/2.8 (ver1 or 2)


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District_History_Fan
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Oct 24, 2012 20:46 |  #11

StillCrazy wrote in post #15164516 (external link)
I just ordered the f/4-5.6 version of this lens, and it should arrive early next week. I'll be leaving in two weeks for a trip to the Grand Canyon, and I hope to use this lens for landscapes there. Does the lens need adjusting, or should I expect it to be good to go right out of the box? I don't think I'll enough time to mail the lens back to Sigma for calibration and get it back in time for my trip.

Expect it to be GTG out of the box. Ultrawide angle lenses have such a wide DOF that focus issues you always here about on faster glass are rarely a problem. My Wigma is wicked sharp and has 5 years of use on it.


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mike_311
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Oct 24, 2012 21:44 |  #12

http://www.the-digital-picture.com …omp=0&FLIComp=0​&APIComp=0 (external link)

it seems to me that at 10mm the 4-5.6 excels and every other range the 3.5 is better, noticeably at the edges.


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dadgummit
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Oct 24, 2012 21:45 |  #13

I have had both versions and I can say the f4 version is sharper at f4 than the f3.5 version. At 3.5 it was awful. In my opinion the 10-20 f4-5.6 is the best all around UWA lens for a crop. It is not quite as sharp as the Tokina 11-16 but it does have the silent HSM motor and focuses MUCH faster.


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StillCrazy
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Oct 30, 2012 16:01 |  #14

The lens was delivered yesterday, and I took a few pics with it today, to test IQ. I'm happy with it so far, but need much more time to play and see how it performs. Here's one quick pic of my neighbor's place, no PP, all auto settings, lens is right out of the box. Oh yeah, I did get the f/4-5.6. Thanks for everyone's advice.

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StillCrazy - after all these years.
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Sigma 10-20mm, which one f/4 or f3.5?
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