Depth of field
Depth of field refers to the clear focus zones
in
front
of and behind the main subject when you focus the
lens. With the FG's aperture-priority automatic expo-
sure, you have
full control over depth of field by vary-
ing
the flstop. The following are important pOints to
remember.
(1)
By
stopping down the aperture to smaller openings
(larger f/numbers), depth of
field becomes deeper
and not
only your main subject but foreground and
background
will also
be
in
clear focus.
On
the
contrary, by opening up the aperture to larger
openings (smaller flnumbers), depth of
field be-
comes shallower and both fore- and background
will
be
out of focus, thus enabling
you
to empha-
size the main subject.
32
(2) The farther the subject from the camera, the
deeper the depth of
field; the closer to the camera,
the shallower the depth
of
field.
(3) Usually, background clarity
is
sharper than that of
the foreground; thus,
in
shallow depth-of-field
situations, you can expect your foreground images
to
be
less clear than those behind the subject.
(4) The shorter the
focal length of the lens, the deeper
the depth of field.
(5) With Nikkor or Nikon
Series E lenses, depth of field
is
indicated by pairs of colored lines
on
the lens
which correspond to the colors of
thef/number.
Therefore, depth-of-field range can
be
obtained by
the corresponding distance scale.
