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T3D Re: Medium format macro needs 2 more stops?

  • From: "William J. Carter, Ph.D." <wc@xxxxxxxxxxxx>
  • Subject: T3D Re: Medium format macro needs 2 more stops?
  • Date: Wed, 7 Oct 1998 11:53:42 -0700
At 12:28 PM 10/7/98 -0600, the analytique John B wrote:

<snip, nice diagram)
>Note that the medium format film is twice as far away from its 
>lens. 
It appears you have an 18 pixel lens, superimposed over a 32 pixel lens,
each having a 4 pixel aperture; making them f/4.5 and f/8 respectively :-)



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