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bellows factor on film speed

 
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Kim



Joined: 10 May 2001
Posts: 44
Location: upstate NY

PostPosted: Sat Jun 16, 2001 3:01 pm    Post subject: Reply with quote

I would be interested in a discussion of film speed and bellows extension. In general I seem to need about a three stop adjustment to my meter readings from the specified film speed. By this I mean that 3000 asa seems correctly exposed when corrected to a film speed of around 400...now this is for medium
depth focus 8-25 feet.

Does this seem about right?

Kim Hartshorn
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JoePhoto



Joined: 13 Oct 2001
Posts: 74
Location: New England

PostPosted: Mon Oct 15, 2001 11:26 pm    Post subject: Reply with quote

Your recently found copy of Ansel Adams' Polaroid Land Photography has something about that on page 300, I think. Unfortunatly, my copy suffered from a roof leak and those pages won't be coming apart in a readable form.

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