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Fred Newman |
9:28 23 Jan 08 |
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Philippe Bedfert |
10:08 28 Aug 07 |
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David Jade |
23:51 28 Aug 07 |
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Philippe Bedfert |
23:05 29 Aug 07 |
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Shannon Stoney |
15:03 20 Apr 07 |
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Steve Nicholls |
19:03 20 Apr 07 |
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Ben Wilbur |
16:16 21 Apr 07 |
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Jorge Gasteazoro. |
21:55 21 Apr 07 |
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Re: bellows contraction factor? |
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Ben Wilbur |
14:53 23 Apr 07 |
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Shannon: Jorge is correct; there is no contraction factor. My "equation" 90/25.4= 3.54" is correct for the focal length-ie lens to film plane. You haven't responded to any of the forum messages. "spill the beans" so to speak and I'm sure we/they will be able to put you on the right track. Film used? Reciprocity issue? Lens shutter speed issue? As to the Davis method(s)- SBR used? Too low? Did you do your own film speed testing?? etc.
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Shannon Stoney |
16:10 23 Apr 07 |
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