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

Send Email

www.rags-int-inc.com

November 1, 2008

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