Jan 25 2008, 03:36 PM
Tamron 17-50mm vs Sigma 18-50mm Macro.
Found this on a Taiwan forum, this is the english translate version:
http://209.85.135.104/translate_c?hl=en&la...tamronsigma.htm
Original source:
http://www.mobile01.com/topicdetail.php?f=248&t=259497
Why choose Tamron 17-50mm f/2.8?, and not Sigma 17-70mm f/2.8-4.5?
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