Pentax 645 - DEPTH-OF-FIELD; DEPTH-OF-FIELD PREVIEW

DEPTH-OF-FIELD
Depth-of-f ield is the area between the nearest and
farthest points which are in proper focus at a given
lens aperture.
The depth-of*field increases as the aperture
becomes smaller; as the focal length of a lens
becomes shorter; or the camera-to-subject distance
is extended further back. By varying the f/stop, the
range "in focus" will change accordingly, allowing
the creating of different photographic effects in
your pictures.
As illustrated in the pictures on the right page
(examples of f/2.8 and f/22), the range "in focus"
can be easily confirmed by checking the depth-of-
field scale on the lens and previewing through the
viewfinder (See page 58.)
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