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11/20/2004 12:48:15 AM · #1 |
Is there a way to determine the amount of zoom from a lens with zoom listed in mm?
For example, 105mm = 3x zoom? Is there some way to determine the mm zoom from 10x and vice versa? Thanks.
Brad |
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11/20/2004 12:54:16 AM · #2 |
Originally posted by singe:
Is there a way to determine the amount of zoom from a lens with zoom listed in mm?
For example, 105mm = 3x zoom? Is there some way to determine the mm zoom from 10x and vice versa? Thanks.
Brad |
Just divide the longest mm by the shortest.
My Sigma 18-125 = 125/18 = 6.9x
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11/20/2004 12:55:51 AM · #3 |
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11/20/2004 12:56:06 AM · #4 |
zoom is a marketing factor used for digital Point N Shoot cameras....
but the basic formula is divide the long end by the short end the get the X faxtor.
28-200mm lens = 7.14x zoom lens
80-400mm = 5 x zoom lens
100-400mm = 4 x zoom lens
hope that helps explain it
James |
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11/20/2004 01:05:28 AM · #5 |
I assume you want to calculate a fixed lens found on a prosumer digital camera. Generally 1x Zoom = 35mm on most digital cameras [on my Panasonic FZ20 it is 36mm]. Below is very close:
Zoom
1x = 35
2x = 70
3x = 105
4x = 140
5x = 175
6x = 210
7x = 245
8x = 280
9x = 315
10x = 350
11x = 385
12x = 420
Hope this helps!
EDIT: For DSLR Camera and more
Message edited by author 2004-11-20 01:18:45.
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