Found on the DOFMaster Website
Depth of Field Calculator
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Depth of Field Definition
Hyperfocal, near, and far distances are calculated using these equations.
Circles of confusion for digital cameras are listed here.
Depth of Field: The zone, or range of distances, within a scene that will record as sharp ... It is one of the most creative and profound effects available to photographers.
Using Your Digital Camera, George Schaub, 2003
Image clarity or sharpness is not just a matter of focusing a lens on the subject. There is an area in front of and behind the sharp focus plane that is also sharp or clear, and the extent of this area changes, depending on the focal length of the lens, the focusing distance, and the aperture used. This three-dimensional area of sharp focus is called depth of field.
Lonely Planet Landscape Photography: A Guide to Taking Better Pictures, Peter Eastway, 2005.
Hyperfocal Distance Definition
... the hyperfocal distance setting ... is simply a fancy term that means the distance setting at any aperture that produces the greatest depth of field.
How to Use Your Camera, New York Institute of Photography, 2000.
When the lens is focused on the hyperfocal distance, the depth of field extends from half the hyperfocal distance to infinity.
Photography, Phil Davis, 1972.
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