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07-12-2008, 08:02 PM   #1
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Sigma 10-20 or DA12-24?

A WA lens is going to be my next major lens purchase (maybe my last for at least for a while), hopefully before the end of this year. I've seen awesome shots from both and have actually had the chance to use the 10-20 and liked it pretty well. I guess the alluring thing about the 12-24 for me is the constant f4, even though the difference in the Sigma's range is only 1 stop. I also like the little bit longer range.

Has anybody put the 12-24 and the 10-20 in a head to head IQ competition?

So far, this is the best deal I've seen on the 12-24, at least for those of us in the US:
PENTAX DA 12-24mm f4 LENS K20D K200D BONUS FREE FILTER - eBay (item 140248623275 end time Jul-17-08 17:24:48 PDT)

For the record, I've also got the Sigma 17-70, which would obviously overlap with either choice. Even though the 12-24 is slower at 24mm than the 17-70 at 24mm (3.5 wide open), the greater overlap would mean less lens changing. I think it would be great for travel if I didn't need anything beyond 24mm.

With the Prodigital2000 deal narrowing the gap to about $120 or so between the 12-24 and the 10-20, which one would you go with?

BTW, I've seen the other thread with all the 12-24 shots and they are awesome. Is it me or does the 12-24 have something special that the 10-20 doesn't?

Thanks!
Heather

07-12-2008, 08:29 PM   #2
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I've heard that distortions (barrel) from the pentax are easier to correct than sigma's distortions at their wide FL.

I've bought the pentax, though it will arrive in a week or so.
07-12-2008, 09:50 PM   #3
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Only two remaining, better hurry, Heather!
07-13-2008, 12:05 AM   #4
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Filter offered ??

I thought that the DA 12-24 mm could not mount a filter due to it's uniqe shape on the end.

Having said that I personally bought my K10 from that ebay seller and am very happy with their service.

07-13-2008, 05:43 AM   #5
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QuoteOriginally posted by weaponx525 Quote
I thought that the DA 12-24 mm could not mount a filter due to it's uniqe shape on the end.
I checked the official Pentax stats and both say that it takes a 77mm filter. If you take a look at some pics from photozone.de's review of this lens, I can faintly see filter threads. The only lens that I know you can't put a filter on in the Pentax lineup is the 10-17 lineup.

I got my DA35 from Prodigital2000, as well, so I've had some experience dealing with them. As good as this deal is, I wouldn't have a problem dealing with them again.

I wish I could afford to just go ahead and get it now, but all the bank accounts at my disposal say no. Unless Pentax is planning on discontinuing this lens anytime soon, I'm sure that there will be more once the money is there.

Heather
07-13-2008, 05:57 AM   #6
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The Sigma also takes a 77mm filter, is cheaper, and in my opinion is a very, very nice lens. The Pentax might well be better, but I am having no trouble getting excellent images out of the Sigma with a minimum of post processing.
07-13-2008, 06:29 AM   #7
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I have the sigma and use it extensively as a travel lens.

I have run in the past EXIF Plot to look at how I use my cameras, and find that 20% of all shots are within the 20mm range, and 12% of every shot I took over an entire year was at 10mm. I might miss the extra width, if someone replaced my 10-20 with a 12-24.
07-13-2008, 07:00 AM   #8
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well there is also one in the Marketplace for the 12-24

07-13-2008, 08:09 AM   #9
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Heather, I pondered the same question for a long time before I finally went with the 12-24. Here are the factors that convinced me.
A) the 12-24 is a constant f4 aperture lens, I have both variable and constant aperture zooms, and to my mind the constant aperture lenses are easier to use with less refocusing needed if you zoom in or out. I also like the fact that no matter where in the zoom range I am, I know exactly what my fastest aperture can be.
B) The Pentax takes normal front mounted filters. 77mm to be sure, but at the time I thought the Sigma did not take normal front mounted filters.
C) After looking at lots and lots of samples it seems to me that the Pentax has less distortion throughout the entire range of the lens. I realize that this is a subjective thing because I've not seen side by side shots of the same scene.
D) Several people in commenting on the lens, have mentioned that the build quality of the Pentax is great. Nobody has made such a comment about the Sigma that I know of. That doesn't mean that the Sigma build quality is bad, just that the Pentax was good enough that people commented on it. I have never held the Sigma so I don't know either way. But I can say that the build quality of the Pentax is great.
E) It's not as important on a super wide like the 12-24, but the quick shift mechanism is always handy.
F) It's a pentax. If all other things balance out, I'll support pentax over sigma, tamron or anybody else.

All of the above seem to make getting the Pentax a no brainer, however there is a very large price difference. That kept me indecisive for a while. In the end I decided to go with the Pentax 12-24. I have absolutely no regrets.

NaCl(If I had gone with the Sigma 10-20, I probably would say the same! )H2O
07-13-2008, 08:14 AM   #10
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If you don't need the 10mm, go with the Pentax. I own the 10-20mm Sigma because i needed and use the 10-11mm range routinely in realestate photography. with 10mm i can get much closer and eliminate unwanted branches, bushes, furniture etc and then correct distortion easily in photoshop. Otherwise, i would own the Pentax 12-24mm as color rendition and sharpness are a slightly more accutate.
07-13-2008, 08:18 AM   #11
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i'm eagerly waiting for this
Tamron developing 10-24mm f/3.5-4.5: Digital Photography Review
07-13-2008, 08:24 AM   #12
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QuoteOriginally posted by NaClH2O Quote
D) Several people in commenting on the lens, have mentioned that the build quality of the Pentax is great. Nobody has made such a comment about the Sigma that I know of. That doesn't mean that the Sigma build quality is bad, just that the Pentax was good enough that people commented on it. I have never held the Sigma so I don't know either way. But I can say that the build quality of the Pentax is great.NaCl(If I had gone with the Sigma 10-20, I probably would say the same! )H2O
quite right.

build wuiality and balance of the sigma are excellent, in general, I find build quality of sigma better in terms of "feel" (that great subjective word) than tamron
07-13-2008, 08:25 AM   #13
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Heather if you want an ultra wide zoom then thats what you need. Can I also suggest a prime such as the DA14 f/2.8? The edges are not soft and the image is not as distorted as the zooms (this can be fixed on the computer I know). Also at f/2.8 its faster/brighter lens. Where I am locally the Sigma 10-20 is $599 (special order), the Pentax 12-24 is $749 (in stock) and the Pentax 14 is $629 (in stock).

I just bought the DA 14 lens yesterday after seeing very good examples on the net.

Here is one example; I used the 'digital shift' feature in Silkypix to remove what little distortion was there.

07-13-2008, 11:13 AM   #14
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QuoteOriginally posted by hwblanks Quote
BTW, I've seen the other thread with all the 12-24 shots and they are awesome. Is it me or does the 12-24 have something special that the 10-20 doesn't?

Thanks!
Heather
Heather, the 12-24 has the Pentax look. As you might have noticed me mention before, I have tried non-Pentax lenses, and was never happy with the way the images looked - film or digital. There are some 12-24 shots of the Elk River on my Flickr site - good and bad. One shows the purple flare with the sun in the lens, but overall, the images are to my eyes nothing but excellent.
07-13-2008, 02:15 PM   #15
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At this point, I'm actually leaning towards the 12-24. I figure if I get into a situation where 12mm isn't quite wide enough, I'll just use the zooming capabilities of my feet to back up a little, unless backing up would mean falling off a cliff, falling off a dock into shark-infested waters, or finding myself in the oncoming path of a moving vehicle.

Actually, I've thought that the 12-24, along with the DA35 and DA55-300 would make a very nice lightweight travel kit. If I should ever decide that I want to trade my Sigma 17-70 for the constant aperture Tamron 28-75 or Sigma 28-70/2.8, the 12-24 would complement either one nicely.

Heather
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