Nikon D300 Complete Manual page 243

complete the setting.
6. Use the Direction pad to navigate to Type. Press the >
key on the Direction pad to see the sub-options.
7. Use the Direction pad to navigate to the option you
want to use. Press the > key on the Direction pad or
the OK button to complete the settings.
If you selected JPEG or one of the RAW+JPEG formats, you
need to set the JPEG compression option:
8. Press the MENU button to show the menu system.
Thom Hogan's Complete Guide to the Nikon D300
V1.02
Page 243