Minolta X-370N - Depth of Field

DEPTH OF FIELD
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When a lens is focused on a given
subject , there is a certain range
behind and in front of the subject
which appears sharp. This range is
called "depth of field", and it varies
according to the aperture set: large
apertures
(e .g., f/l .7) yield a
shallow depth of field rendering the
background out of focus (example
A); small apertures (e.g., f/22) give
greater
depth of field with sharper
background (example Bl. The depth
of field can be checked on the lens'
depth-of-field scale as shown .
Depth of field also varies with
subject distance: when the lens is
focused on a close su bject , the
depth of field is shallow; when
focused on a distant subject , the
depth of field is greater.