Nikon D300 User Manual page 206

The D300(S) has better noise control than most cameras, so
it's able to shoot up to
digital camera is completely without noise (that I know of), so
it's a good idea to use some noise reduction above a certain
level of ISO sensitivity.
With the D300(S), the ISO can go up to
producing much noise. After that, you must choose to allow
or disallow High ISO NR
are the selections:
▪ High
▪ Normal
▪ Low
▪ Off
For any of these settings, except Off,
performed starting at ISO 800. You'll need to shoot some
high ISO exposures and decide for yourself whether you are
comfortable with
Figure 3-45 shows a sample image taken at ISO
High ISO NR
Normal, and High
High ISO NR
you change the setting from
image, you blend the grainy noise into its surroundings and
reduce the appearance of noise in the image. A variable
amount of mild resharpening is applied to restore some image
sharpness. This whole process tends to make the image lose
detail as noise reduction is turned to higher levels.
ISO 800
(High ISO Noise Reduction). Here
High, Normal,
set to Off. I then took the same image at Low,
settings.
works by blurring the image more and more as
with little noise. However, no
High ISO NR
Low, or even Off.
Low to High. By blurring the
206
800 without
will be
3200 with