This is a simple HTML JavaScript form that calculates Depth of Field metrics. Enter your camera data such as the image format, lens, aperture, and subject or object distance and the corresponding DoF will be calculated. More complete instructions are available in the DoF User's Guide.
There is a similar calculator available from: dofMaster This site has some additional and useful information about the formulas and concepts of DOF. But the formulas used in their tools are grossly inaccurate at macro distances and even close up distances typical in table top photography. The formulas used in this script are based on Wikipedia, Norman Koren, Andrej Wrotniak, and Paul vanWalree. These all agree with each other. There is also a good tutorial on diffraction limits and the effects of digital photo-site sizes at: Cambridge In Colour. Textbook resources include Optics in Photography by Rudolf Kingslake (ISBN 0-8194-0763-1) and Applied Photographic Optics by Sidney F. Ray (ISBN 0-240-51540-4).
If you have any comments, or suggestions, I would welcome your input. Please send me an Email
Rags Gardner
Rags Int., Inc.
204 Trailwood Drive
Euless, TX 76039
(817) 267-2554
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www.rags-int-inc.com
November 1, 2008
This page last updated on: Saturday November 01 2008
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