Nikon D300 Complete Manual page 293

to select it.
7. Use the Direction pad to navigate to the highest ISO
value you want the camera to use when automatic
ISO is active and press the > key on the Direction pad
to select it.
8. Use the Direction pad to navigate to Minimum
shutter speed and press the > key on the Direction
pad to select it.
9. Use the Direction pad to navigate to the lowest shutter
speed you want the camera to use when automatic
ISO is active and press the > key on the Direction pad
Thom Hogan's Complete Guide to the Nikon D300
V1.02
Page 293