Nikon D300 User Manual page 286

If you are concerned with maximum ISO control, then use the
1/3 step setting. It takes longer to scroll through the ISO
selections if you manually set your ISO value in
The 1/3 step setting is the factory default value for b1.
Here are the screens and steps to change the
step value (see
Figure 4-17. ISO sensitivity step value
1. Select b Metering/exposure
Menu and scroll to the right (see
2. Highlight
right (see
3. Choose one of the three items on the menu. In
Figure 4-17, image 3,
4. Press the
Now, let's talk more about how to use the
value setting. With
hold down your camera's
camera and turn the rear
your camera was set to ISO
ISO number in the
pattern:
Figure 4-17):
ISO sensitivity step value
Figure 4-17, image 2).
1/3 step
OK button to lock in the setting.
ISO sensitivity step value
ISO button
Main command dial
Control panel
from the
Figure
has been selected.
ISO sensitivity step
on the top left of the
200 initially, you'll see that the
changes in the following
286
1/3 steps.
ISO sensitivity
Custom Setting
4-17, image 1).
and scroll to the
set to 1/3 step,
to the right. If