Thread: IIS/STS attempt - best to keep this one quiet
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Old 12-07-2006, 12:42 PM
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[1ponders] (Paul)
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Sorry to disappoint h0ughy, but your 500mm lens on a DSLR won't give you 750X. Try about 15X

Roughly divide your FL (500) by 50 then multiply by 1.5 -1.6 to work out the mag.
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