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09-07-2009, 08:41 AM   #1
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Promaster Spectrum 7 Advice

I just purchased a Promaster Spectrum 7 70-300mm f4-5.6 AF and a Promaster Spectrum 7 28-80mm f3.5-5.6 AF at great price bundled with a ZX10 on ebay. I'm only really interested in the 70-300 to use with my k20d. Anyone with experience in this lens? I've read some places that they may be rebadged Tamrons. Anyway, if I don't like the lens I can most likely resell on ebay for more than I paid.

09-07-2009, 11:11 AM   #2
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Any info useful

Any information would be helpful.
09-07-2009, 11:43 AM   #3
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It is either Sigma or Tamron.
Look at front filter diameter for your lens and one for Sigma and Tamron (it have larger filter dameter).
I have two Promaster lenses and they are ok.
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