Thread: Extension tubes calculation
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Old September 10th, 2006, 09:55 PM
Sean DeMerchant Sean DeMerchant is offline
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Some tables for Canon lenses: http://www.bobatkins.com/photography/eosfaq/closeup.htm

You can find a more formulaic answer at: http://photography-on-the.net/forum/...ad.php?t=19350

enjoy,

Sean
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