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Lens
> Lens controls > Focus & Zoom
In
addition to exposure, there are two other important
lens controls: focus and zoom. Since I covered these
in earlier lessons, I'll just summarize here.
Focus:
All video cameras have both an automatic and manual
focus control. Automatic can work pretty well, but professionals
use manual almost all the time. Manual focus control
is always the outermost ring on a video camera.
Zoom:
Nearly all video cameras have a zoom lens. More expensive
cameras have a smoother zoom motor that makes it easier
to start and stop zooming. Cheaper cameras are more
abrupt. Better cameras will let you manually zoom quickly.
Cheaper cameras force you to use a slow zoom motor.
Often,
lenses are touted on their zoom ratio, which
is a way of expressing how much a lens can magnify—that
is, how telephoto it can go. While this is not insignificant,
it's not terribly important either.
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