The depth-of-field varies according to the
aperture. The smaller the aperture
(f/8,
f
/11
,
f/16...) the greater the depth-of-field; the
larger the aperture (f/8, f/5....) the smaller
the depth-of-field. To take pictures which
are sharp from foreground to infinity or
when taking snap shots, the focusing range
is extended or depth increased by using a
smaller aperture. When the subject is to
stand out, with the background out of
focus,
a larger aperture is appropirate.
The depth-of-field scale on the lens
indi-
cates depth-of-field in terms of the distance
between subjects on both sides of the
scale. For example, when a 75mm lens is
stopped down to
f/8
and f/16, respectively,
everything photographed within the ranges
shown in the photo at the left will be sharp.
Six types of diopter correcting lenses are
available for near/far-sighted people. Mount
as indicated above.
Powers available are: +3, +2.
+1
-1, -2
and -3.
l
Refer to the instructions attached to individual
lenses for specific depth-of-field tables..
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