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Old December 28th, 2007, 11:11 AM
Jim Hall Jim Hall is offline
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Join Date: Jul 2007
Location: paterson new jersey
Posts: 4,788
the number 28 300 etc is a measure of the focal length

your digital has a focal lentgh too, usually printed near the lens
so if your digital is 28 mm a 10x would be 280 mm

A normal perspective for a 35 mm is 50mm of focal length

i dont thimk you can convert focal lentgh to apprant close ness
well maybe you can but i have no idea

WHy do you need to know this? Not being a wiseguy it sounds like you are trying to do somethig trickey
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