1.6 crop factor on Tamron 200-500 (& others)

Started Jun 28, 2006 | Discussions thread
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juliemeikle
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1.6 crop factor on Tamron 200-500 (& others)
Jun 28, 2006

Hi

Just breading some info on this & find it states that on a Canon 30D this lens becomes a 760mm..... I have been multipling by 1.6, and I make this 800??
Cabn someone explain please as I have got my reasoning wrong somewhere?
Thanks

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