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08-11-2011, 01:36 PM   #16
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QuoteOriginally posted by Mike.P Quote
Grip?
Everyone knew that....but me. Thanks.

Maybe I have been watching too much BASE jumping (Building, Antenna, Span, Earth)

08-11-2011, 03:07 PM   #17
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These articles might help:
Juza Nature Photography
Sigma or Tamron 70--200mm f/2.8 Lens? - Steve's Digicams Forums
Tamron SP AF 70-200 mm f/2.8 Di LD (IF) MACRO review - Introduction - Lenstip.com

Tamron is very very good value for money.
08-12-2011, 02:22 AM   #18
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Original Poster
thanks again every one my dilemma was that I can but either the Tamron or the Sigma for the same price as I found a shop with Pentax mount Sigma 70-200mm F2.8 EX DG MACRO HSM II Lens which is now no longer being made only the very expensive Sigma 70-200mm F2.8 EX DG OS HSM Lens .
I have ,since price does not come into it, decided that the consistently reviewed superior lens IQ of the Tamron out ways any focusing issues which might or might not be present in a Pentax fit version.

Sharpness is more important than speed of focus for me.

What I don't understand is why some lenses find focus better than others given that the measurements and image comparison are carried out in the body not the lens?

Any way delivery due on Monday and then I find out.
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