Nikon EM Посібник користувача - Сторінка 20
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Exposure warning signal: Should a
"beep-beep"
sound be emitted, note the position of the needle in the
shutter speed scale. If it swings past
1/1000sec.
and stays within the red zone, overexposure will result. In
this case, reset lens aperture until the sound stops or the needle
"drops"
from the red zone
;
despite the
sound, correct exposure is possible. If the needle is around
1/30sec.
or below, the sound merely warns
you that camera shake may affect image sharpness because of the slow shutter
speed.
You either read-
just aperture until the sound
stops,
or, if the needles is below
1/30sec.,
use a tripod to prevent picture
blur.
The meter remains switched on for a brief period even after
your
finger is lifted off the shutter
release
button.
Notes:
1.
At approximately 1/1000sec. or
1/30sec.,
a shrill
sound
may be
emitted; it
becomes regular when the
needle goes beyond these points.
2. It
is
possible you won't hear the waming sound in noisy shooting
situations.
Overexposed (Above
1/1000
sec.)
Tripod recommended to prevent
Correctly exposed
camera shake (Below
1/30
sec.)
QA
Q. What
shutter
speed is best to use?
don't
take
hand· held pictures at shutter
speeds
A.
The shutter speed
should
be fast
enough to
pre-
slower than
1/50sec.,
and with a
135mm,
try to use
vent
camera
shake, especially in hand -held shoot-
a minimum
speed
of
1I135sec.
Remember,
th.is
ing.
In dim
light,
you may not be able to get
a
high
presumes
your subject
is not
moving.
If it
does,
speed.
As
a
rule
of
thumb,
use a tripod if the shutter
you'll
need faster speeds-in which
case
you
just
speed is slower than a number equal to the
focal
open the lens aperture.
20
length of the lens. For
example,
with a 50mm
lens,