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forWindows.zip 2014-11-20 1.9 MB
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readme.txt 2014-11-19 826 Bytes
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This program is designed for phtographer who need to know different DoF in each apertures under fixed environment factors.
It is a one-page calculator. Just input the film/sensor size and focal length of lens, DoF of each different aperture will be calculated and presentated.

The calculate rule is based on the wikipedia page:
   http://en.wikipedia.org/wiki/Depth_of_field
in the segment " Derivation of the DOF formulae"

DoF = Df-Dn
Df= sf^2 /[ f^2 - Nc(s-f)]
Dn = sf^2 /[ f^2 + Nc(s-f)]

while c  is based on the wikipedia page:
  http://en.wikipedia.org/wiki/Circle_of_confusion
   TABLE: " Circle of confusion diameter limit based on d/1500"

Please Note: the CoC = 0.029mm  at 35mm film used , not 0.03mm used in some android/ios app, make the calculated data may have a 3% variance between programs.
Source: readme.txt, updated 2014-11-19