Photography - What is Depth of Focus. How does it differ from Depth of Field ? Please,let me know?

Answer 1

While the phrase depth of focus was historically used, and is sometimes still used, to mean depth of field, in modern times it is more often reserved for the image-side depth. Depth of field is a measurement of depth of acceptable sharpness in the object space, or subject space. Depth of focus, however, is a measurement of how much distance exists behind the lens wherein the film plane will remain sharply in focus. It can be viewed as the flip side of depth of field, occurring on the opposite side of the lens. Where depth of field often can be measured in macroscopic units such as feet and meters, depth of focus is typically measured in microscopic units such as thousandths of an inch or fractions of a millimeter. Since the measurement indicates the tolerance of the film's displacement within the camera, depth of focus is sometimes referred to as "lens-to-film tolerance."

Basically, if you're shooting digital...don't worry about depth of focus. Depth of FIELD, however is of primary concern. For an exhaustive explanation of this concept, please refer to the source(s) below...

Answer 2

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Answer 3

the wider your angle lens, the greater your depth of field, the 3 dimensional things that will be focused in the shot. Depth of focus I think is a different term for the same concept.

Answer 4

depth of field is the distance that seems to be in focus and sharp in the picture. in other words it is the distance you can move towards or away from your subject, without spoiling its sharpness in the picture. The wider your lense, the larger the depth of field.
Depth of focus, I think!, is the distance you can move the film, in the camera, toward or away from the lense, without spoiling the sharpness of your subject. in modern 35mm cameras, in which you cannot change the position of the film, depth of focus should not worry you.

Answer 5

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Answer 6

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