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04-30-2014, 06:14 PM   #1
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Simple question please?

For those of you with experience with Sigma lenses, does the addition of HSM and OS make a beneficial difference? Up to this point I've only owned and shot with screw driven lenses with no OS and have become curious.

Thanks in advance!

04-30-2014, 07:33 PM   #2
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QuoteOriginally posted by Trudger1272 Quote
For those of you with experience with Sigma lenses, does the addition of HSM and OS make a beneficial difference? Up to this point I've only owned and shot with screw driven lenses with no OS and have become curious.

Thanks in advance!
Well, OS is redundant since Pentax camera have in-body stabilization. That's why current Sigma lenses in the Pentax mount don't have OS, even if the corresponding lens does in other mounts.

HSM is nice as it usually increases focusing speed and is virtually inaudible.

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04-30-2014, 07:47 PM   #3
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Thank you very much Adam. That's all I needed to know.
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