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03-22-2012, 08:04 PM   #1
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Sigma 10-20 question

Did a quick search on this with no results...

I just bought a used sigma 10-20 on ebay. It appears slightly different (no focus window, MF/AS switch, etc) from the one on sigmas website. Did sigma recently update the lens or is this only because the pentax version is non HSM?

I got the lens for about $100 less than retail but was wondering if I actually bought an older version or if all pentax's are the same.

Can anyone help me out?

03-22-2012, 08:33 PM   #2
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If you look at the Sigma zoom reviews here you'll see two 10-20s -- the older f/4-5.6 and the newer f/3.5, which is priced higher. You probably have the f/4-5.6 version.
03-22-2012, 10:09 PM   #3
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I am aware of the 3.5, but even on the sigma website the 4-5.6 has some slight changes vs the one I have.
03-22-2012, 11:52 PM   #4
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Yes, you have the older version as do I.

03-23-2012, 05:44 AM   #5
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Despite what has been written the f4-5.6 lens for Pentax mount does not have the af/mf switch or the the focus window, nor does it have HSM as per the Pentax lens review. If you look @ the Sigma Web site you will notice it is classed as "J" lens. The lens you have is still the current model, Sigma have simply 2/ 10-20 lenses - the more expensive has constant f3.5.

Many people consider the "older" model to have better reviews.

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