Nikon 5000 - Manual (Page 142)

Taking Photographs—Advanced Photography
128
Avoiding “Grainy” Photographs: Noise Reduction
When sensitivity (ISO equivalency) settings above
ISO 100 equivalent or shutter speeds slower than
1 /
15
s are used, “noise” in the form of randomly-
spaced brightly-colored pixels may appear in pho-
tographs, particularly in shadows. The noise reduc-
tion menu offers two options for reducing noise:
On and Clear Image Mode.
Description Option
All noise reduction options off; camera functions
normally.
Off
This option, which only takes effect at shutter
speeds of
1 /
15
s or slower, is used to reduce noise in
long time-exposures. This setting can be used with
the flash and is available at all image sizes. Time
required to save images to memory card more than
doubles.
On
This option is used to minimize noise and improve
color gradation in photos SXGA or smaller. Each
time the shutter-release button is pressed, the cam-
era makes two exposures with the shutter open,
and a third with the shutter closed. The results are
compared to reduce noise, and the single photo-
graph that results saved to the memory card. Time
required to save images to memory card more than
triples.
Clear Image Mode