Definition: The small range of allowable focusing error that will still produce an acceptably sharp image when a lens is not focused exactly.
Definition: The distance range over which the film could be shifted at the film plane inside the camera and still have the subject appear in sharp focus; often misused to mean depth of field.
Definition: distance which the film plane can be moved while maintaining an acceptably sharp image without refocusing the lens.
Definition: Depth of focus refers to the zone in front of and behind the focal plane in which the blurred image point is smaller than the acceptable circle of confusion. An image, if it is not on the focal plane but within the depth of focus, is distinguished as a sharp image although it is, in fact, slightly blurred. Depth of focus depends on the f-number and the acceptable circle of confusion. The focal length of the lens does not affect the depth of focus.
Definition: The distance range over which the film could be shifted at the film plane inside the camera and still have the subject appear in sharp focus; often misused to mean depth of field.
Definition: distance which the film plane can be moved while maintaining an acceptably sharp image without refocusing the lens.
Definition: Depth of focus refers to the zone in front of and behind the focal plane in which the blurred image point is smaller than the acceptable circle of confusion. An image, if it is not on the focal plane but within the depth of focus, is distinguished as a sharp image although it is, in fact, slightly blurred. Depth of focus depends on the f-number and the acceptable circle of confusion. The focal length of the lens does not affect the depth of focus.
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