Nikon D5300 - Nikon D5300 Ch1 001-021 P2 RY.indd

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NIKON D5300
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Aperture and depth of field
Depth of field describes the zone in front
of and behind the actual point of focus in
which objects appear to be sharp in the
final image.
Aperture is only one of the factors
influencing depth of field. The other key
factors are the focal length of the lens and
the distance to the subject. With long
lenses and/or nearby subjects, depth of
field may remain quite shallow even at
small apertures.
Sometimes a shallow depth of field is
exactly what you want, as it makes the
subject stand out against a soft
background. This is common with portraits,
for example, and is also often seen in
sports and wildlife photography—though
in these genres the frequent combination
of a long lens and fast shutter speed means
that shallow depth of field is more of a
necessity than a completely free choice.
SHALLOW DEPTH OF FIELD
Using a long lens at its widest aperture on a
fairly close subject, depth of field is undeniably
shallow: the eye is sharp but even the feathers
on the breast are a little soft. 300mm, 1/400 sec.,
f/4, ISO 400.
Nikon D5300 Ch2 022-105 P2 RY.indd 60Nikon D5300 Ch2 022-105 P2 RY.indd 60 19/02/2014 15:4119/02/2014 15:41