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07-14-2008, 08:05 AM   #1
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The Tamron 70-200 seems to be the winer ...

But not overall.
See tests for Tamron and Sigma 70-200 f2,8.
You need not to be Polish speaking to understand the charts and samples
How bad can autofocus be for Tamron on Pentax mount?

07-14-2008, 08:38 AM   #2
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QuoteOriginally posted by gkopeliadis Quote
But not overall.
See tests for Tamron and Sigma 70-200 f2,8.
You need not to be Polish speaking to understand the charts and samples
How bad can autofocus be for Tamron on Pentax mount?
Showed very high and consistant resolution with a noteable advantage over the Sigma, the samples even wide open look great. Bokeh looks smooth and great close focus for such a lens. CA and distortion almost nothing, very mild vignetting wide open.

Will this lens be able to use a silent motor for Pentax? According to the Tamron page, the Nikon mount has a motor, but it doesn't mention for anything else (including Canon) AF70-200mm F/2.8 Di LD (IF) Macro; Tamron USA, Inc.

Admittedly, the apparent inclusion of the USM for Pentax in the Sigma is of considerable sway. BH has the Sigma listed for 799 and the Tamron for 699. Really low prices considering the performance of both lenses as well.
07-14-2008, 08:44 AM   #3
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iirc, only canon and nikon have a built in motor. but it's not very good, at least from the dpreview lens review. all other mounts will use screw drive
07-14-2008, 08:50 AM   #4
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The Tamron was not a favourite with this long time Pentax owner: Tamron 70-200 is a POS...DO NOT BUY - Photo.net Pentax Forum

07-14-2008, 09:18 AM   #5
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QuoteOriginally posted by Peter Zack Quote
The Tamron was not a favourite with this long time Pentax owner: Tamron 70-200 is a POS...DO NOT BUY - Photo.net Pentax Forum
Where did he find that lens for Pentax mount to judge? Or am I missing something?
07-14-2008, 09:31 AM   #6
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QuoteOriginally posted by gkopeliadis Quote
Where did he find that lens for Pentax mount to judge? Or am I missing something?
Its probably a Nikon mount he used and tested.
If he ordered an 80-200 F2.8 D lens, as a replacement, that is a Nikon Lens.

Dave
07-14-2008, 09:52 AM   #7
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QuoteOriginally posted by pentkon52 Quote
Its probably a Nikon mount he used and tested.
If he ordered an 80-200 F2.8 D lens, as a replacement, that is a Nikon Lens.

Dave
Yeah, he did mention in the article it was Nikon. We can always wait and see what happens for Pentax. Word is no motor drive for us K-mounters though, which puts the Sigma into a good position if indeed it does feature USM for us. Its resolution was high, just not as high as the Tamron.

I'll be waiting for both to appear in-store and just see what gives.
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