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04-08-2008, 10:07 AM   #16
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The Tamron/Sigma 70-300s definitely seem to make more sense for your requirements. I currently own both having just bought the Sigma version, became a bit annoyed by the PF of my Tamron, not too impressed with colour rendition either.

I've taken a few comparison shots (over on the Dpreview pentax forum) and after using the sigma for a little while have decided that the Tamron will be going.

My own copy of the Sigma produces much better colour/contrast than the Tamron and sharpness is only behind my tamron at F5.6, smaller apertures the difference is negligible. Overall I'm much happier with the images my sigma copy produces than I am with the Tamron.

Unfortunately as everyone says sample variation is common with lenses so others may suggest the opposite !!


04-08-2008, 11:10 AM   #17
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QuoteOriginally posted by frank Quote
To keep you staying w/ Pentax, I can get you the best AF TC (SMC F1.7x TC) w/o any problem ...
I'd be interested to know how and where too..
04-08-2008, 11:53 AM   #18
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QuoteOriginally posted by madisonphotogrl Quote
I'd be interested to know how and where too..
Right ...

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