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Old Aug 27, 2009, 6:32 PM   #1
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Default Sigma 10-20-someting to consider ?

I'm thinking about the Sigma 10-20 for my Pentax DSLR's...K10D and KM. I tried one at the local camera shop, liked it...

I have a Pentax 16-45mm Zoom and although I like it, have been thinking of a more extreme wide angle.

On my Pentaxes...the 10mm would be approx, a 15 mm equivalent and the Pentax 16 mm is the equivalent (to a 35mm) of a 24mm.

How do you find the Sigma 10-20mm...quality wise (would it be match of Pentax glass-very happy with these), any odd characteristics, reliable, etc. Thanks.
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Old Aug 31, 2009, 10:43 AM   #2
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I love my Sigma 10-20 ... on Canon DSLRs

Look there ~ 26.000 photos with Sigma 10-20 :-)

http://www.pbase.com/cameras/sigma/10-20_4-56_ex_dc_hsm
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Old Aug 31, 2009, 9:45 PM   #3
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I love my Sigma 10-20 ... on Canon DSLRs

Look there ~ 26.000 photos with Sigma 10-20 :-)

http://www.pbase.com/cameras/sigma/10-20_4-56_ex_dc_hsm

Thank you for your response. Very helpful. I reviewed some of the 10-20 photos.



I have read on some sites that some 10-20's are top notch, other's aren't...don't know if this is just urban myth or ?

I tried one at a camera store (Pentax K mount) and also a Pentax 12-24...the 10mm gives more w/a effect.

I want to use an extreme w/a primarily for car pictures and landscapes...the widest lens I have now is a Pentax 16-45 on my K10D/KM...it's great...very sharp, colour rendition excellent...I want the same features in an extreme wide angle?

Have you found your Sigma 10-20 capable of very sharp photos, excellent colour rendition, etc?
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Old Sep 3, 2009, 7:15 AM   #4
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"Have you found your Sigma 10-20 capable of very sharp photos, excellent colour rendition, etc? "
If I might also answer this:Yes!
Only issue with the lens was that when I bought it to use with my K20D, I found I had to adjust for front or was it back focus? Done once and it is one of my best lenses. Much better than a Pentax 12-24 I tried in-store. My research suggested better still is the Sigma 12-24 but it costs much more. I do find however that I use the 10mm end the most. A great lens when travelling.
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Old Sep 3, 2009, 11:17 PM   #5
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"Have you found your Sigma 10-20 capable of very sharp photos, excellent colour rendition, etc? "
If I might also answer this:Yes!
Only issue with the lens was that when I bought it to use with my K20D, I found I had to adjust for front or was it back focus? Done once and it is one of my best lenses. Much better than a Pentax 12-24 I tried in-store. My research suggested better still is the Sigma 12-24 but it costs much more. I do find however that I use the 10mm end the most. A great lens when travelling.
bb2

Thank you for your response. I like this lens (Sigma 10-20) and am considering it.

I have a K10D and KM. How do you adjust for front or back focus ?
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Old Sep 4, 2009, 11:54 AM   #6
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the sigma would be a great companion to your 16-45. its a well built, good ultra-wide.

since you already have the 16-45, it would be better than the pentax/tokina 12-24.
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Old Sep 6, 2009, 11:57 AM   #7
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the sigma would be a great companion to your 16-45. its a well built, good ultra-wide.

since you already have the 16-45, it would be better than the pentax/tokina 12-24.
That's what I'm thinking. I know 6 extra mm of wide angle doesn't sound like much, but I believe my 16-45 is at it's 16 mm setting a 24 mm in 35mm terms, while the Sigma 10-20 is a 15mm at the 10 mm setting.

I think this would make a significant difference...ie; extreme wide angle to moderate wide angle.

I did think of the Pentax 10-17 fisheye...but although fisheye can give some remarkable pictures, it maybe a novelty that wears of after awhile.
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Old Sep 8, 2009, 9:54 PM   #8
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Has anyone heard of quality control issues with Sigma lenses ?
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Old Sep 10, 2009, 6:59 AM   #9
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Often talked about by some, often with no experiece of them I suspect. I have quite a few Sigma lenses. Would stick to the premium EX range though.
There are lots of posts on adjusting for front and back focus on your lenses when using a K20D. I'm not familiar with the KM. The K10D doesn't have user focus adjustment I believe.
PS Autofocus is perhaps unnecessary when using the Sigma EX 10-20? DOF is so great that manual focus can be set and used with great results.

Last edited by beachboy2; Sep 10, 2009 at 7:10 AM.
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Old Sep 10, 2009, 4:59 PM   #10
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I have also been hovering around this lens at my local camera shop. I love the look of the wide angle shots and I def. think I am gonna jump in and buy one.
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