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Depth of field, Depth of field —38, Exposure – Nikon Camera F3AF User Manual

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EXPOSURE

—Continued-

Depth of Field

When you shoot at a certain aperture and focusing distance,

you wiii find that not only the main subject but objects in a cer­

tain distance range in front of and behind it will be sharp in the

final photograph. Objects beyond this range become increas­

ingly out of focus. This "in-focus zone” is known as depth of

field. When this zone of sharpness is large, the depth of field is
said to be deep; when it is small, the depth of field is said to
be shallow.

The following is true of depth of field:

1) The smaller the shooting aperture (i.e. the larger the numeri­

cal f-number), the deeper the depth of field; the larger the
aperture, the shallower the depth of field.

2) The farther away the subject is from the lens, the deeper the

depth of field becomes; the closer to the lens, the shallower

the depth of field.

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