304
Noise (bright spots, randomly-spaced bright pixels, fog, or lines) appear in photos
:
•
Bright spots, randomly-spaced bright pixels, fog, and lines can be
reduced by lowering ISO sensitivity.
•
Use the
Long exposure NR
option in the photo shooting menu to limit
the occurrence of bright spots or fog in photos taken at shutter speeds
slower than 1 s (
•
Fog and bright spots may indicate that the camera’s internal
temperature has become elevated due to high ambient temperatures,
long exposures, or similar causes: turn the camera off and wait for it to
cool before resuming shooting.
•
At high ISO sensitivities, lines may appear in photos taken with some
optional flash units; if this occurs, choose a lower value.
•
At high ISO sensitivities, including high values selected with auto ISO
sensitivity control, randomly-spaced bright pixels can be reduced by
selecting
High
,
Normal
, or
Low
for
High ISO NR
in the photo or movie
shooting menu (
•
At high ISO sensitivities, bright spots, randomly-spaced bright pixels,
fog, or lines may be more noticeable in long exposures, multiple
exposures, and photos taken at high ambient temperatures or with
Active D-Lighting enabled,
Flat
selected for
Set Picture Control
148) or extreme values selected for Picture Control parameters
•
In
%
mode, randomly-spaced bright pixels, fog, or lines may be more
noticeable in pictures shot under low light.
Flicker or banding appears in movie mode
: Select
Flicker reduction
in the
movie shooting menu and choose an option that matches the frequency
of the local AC power supply (
259).
Bright regions or bands appear in live view
: A flashing sign, flash, or other light
source with brief duration was used during live view.
Sound is not recorded with movies
:
Microphone off
is selected for
Microphone sensitivity
in the movie shooting menu (
259).
Summary of Contents for D7500
Page 354: ...328 A Certificates ...
