Nikon D300 User Manual page 213

lowest ISO sensitivity
needed, it can rapidly rise to the
This setting overrides the normal
If you would prefer that the
a certain ISO value, simply select from the list shown in
Figure 3-51, image 3. The
ISO 3200. That's too high for my taste, since it will let the
camera take the
a low-light situation. Too much noise potential for me!
Maybe not for you? In any case, I set my camera's
sensitivity to ISO 400, as shown in
Figure 3-51. ISO sensitivity auto control – Maximum
sensitivity
You'll note that there are only five available settings: 400,
800, 1600, 3200, and
you choose is the maximum ISO value the camera will use to
get a good exposure when the light drops.
Interestingly,
incremental ISO numbers between these primary values. I
carefully set up my D300S to test this and found that it would
often use an intermediate value like ISO 640, 1100, 1250,
2000, or 2200
whether I set Custom setting b1
it can to get the picture. However, if
Maximum sensitivity
Maximum sensitivity
ISO sensitivity
Hi 1. The
Custom setting b1
as the light got darker and darker. It did this
213
Maximum sensitivity
ISO sensitivity
all the way up to ISO
Figure 3-51, image 3.
Maximum sensitivity
does not control the
to 1/3, 1/2, or
level.
settings.
not exceed
default is
3200 in
Maximum
setting
1 EV step. Just