Depth of Field Table

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Hyperfocal, near, and far distances are calculated using these equations.

Circles of confusion for digital cameras are listed here.

Depth of Field Definition

Depth of field refers to the section of a photograph that appears to be in sharp focus.

John Shaw's Nature Photography Field Guide, John Shaw, 2000

The depth of field is defined as the area in front of and behind the subject that is in acceptable focus.

Night and Low-Light Photography Workshop, Alan Hess, 2011

When an object is in focus, everything from a certain distance in front of the object to a certain distance behind the object will also be in reasonably sharp focus. This distance from front to back that will be in reasonably sharp focus is called the depth of field.

How to Use Your Camera, New York Institute of Photography, 2000.

Hyperfocal Distance Definition

If you set the camera's focus to the hyperfocal distance, your depth of field will extend from half of the hyperfocal distance to infinity—a much deeper depth of field.

Complete Digital Photography, Ben Long, 2012.

Hyperfocal is a combination of distance and aperture that produces the sharpest image and greatest depth of field possible for a given lens.

Nature Photography Photo Workshop, Nat Coalson, 2011.