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04-25-2008, 10:17 AM   #1
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Does Tamron 17-50 has SDM ?

Could not find it anywere.
B&H says there is SDM for Nikon mount but nothing about SDM in Pentax mount.
Any info?

04-25-2008, 10:20 AM   #2
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nope it doesn't

it's good and bad... newer cameras can't take advantage, but at least old cameras can use it
04-25-2008, 10:25 AM   #3
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Looking at the Tamron site I'd have to say it isn't available in a Pentax mount even
Here's the link

I imagine that they'd design one, if there was enough demand for it, so feel free to contact them about it.
04-25-2008, 10:36 AM   #4
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QuoteOriginally posted by little laker Quote
Looking at the Tamron site I'd have to say it isn't available in a Pentax mount even
Here's the link

I imagine that they'd design one, if there was enough demand for it, so feel free to contact them about it.
Somehow B&H has it in stock...
Tamron | 17-50mm f/2.8 XR Di-II LD Aspherical [IF] | AF016P-700

04-25-2008, 11:04 AM   #5
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a few people have the lens but it seems like a lot of them are experiencing focusing issues
04-25-2008, 02:07 PM   #6
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I must have lucked out with a good lens.
https://www.pentaxforums.com/forums/post-your-photos/25820-couple-shots-w-my-...7-50-2-8f.html
What is SDM? Yes I am a noob.
04-25-2008, 03:43 PM   #7
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QuoteOriginally posted by darthku Quote
I must have lucked out with a good lens.
https://www.pentaxforums.com/forums/post-your-photos/25820-couple-shots-w-my-...7-50-2-8f.html
What is SDM? Yes I am a noob.
SDM = hypersonic = HSM, etc. Its the motors built into the lens. Makes for faster focus.
04-25-2008, 09:52 PM   #8
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I have one and sorry to say it does not have SDM.. But it's a great lens..

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