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The term “zoom” covers lenses with
variable focal length, like the AF-S DX
Nikkor 18–105mm f/3.5-5.6G. A zoom lens
can replace a bagful of prime lenses and
cover the gaps in between, scoring highly
for weight, convenience, and economy.
Flexible focal length also allows very
precise framing.
While once considered inferior in
optical quality, there is now little to choose
between a good zoom and a good prime
lens, at least in terms of general sharpness
and contrast. Most zoom lenses will have
a “sweet spot” somewhere in the zoom
range where distortion is minimal, but
many show discernible barrel distortion
at wide settings and pincushion at the
long end.
Zooms with a very wide range (e.g.
18–200mm or 28–300mm) may still be
optically compromised, and usually have a
relatively small (“slow”) maximum aperture,
but they are undeniably versatile. That
wide, uninterrupted zoom range can prove
useful for movie shooting in particular.
ZOOM-NIKKOR 18–105MM F/3.5–5.6G
AF-S VR
WINDMILL
A zoom lens’s
versatility helps
with creative
photography,
offering the
chance to try
different shots of
the same subject at
different focal
lengths from
the same spot.
66mm, 1/250 sec.,
f/8, ISO 200.
›
Zoom lenses
199
THE EXPANDED GUIDE
LENSES
»
LENS TYPES
Nikon D5300 Ch7 184-207 P2 RY.indd 199Nikon D5300 Ch7 184-207 P2 RY.indd 199 19/02/2014 17:1019/02/2014 17:10
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