Nikon D300 Complete Manual page 716

To use Trim, you must first take a picture. That picture can be
NEF or JPEG, black and white or color.
1. Press the MENU key to show the menu system.
2. Use the Direction pad to navigate to the RETOUCH
menu (purple paintbrush icon) and press the > key on
the Direction pad to enter the menu.
3. Use the Direction pad to navigate to Trim press the >
key on the Direction pad to select it.
4. You'll be presented with thumbnails of six images at a
time.
a. Use the Direction pad < and > keys (or Rear
b. Use the Zoom In button (h) to see the currently
c. Press the OK button to select the image you
Thom Hogan's Complete Guide to the Nikon D300
Command dial) to navigate to the image you
wish to work with.
selected image in full screen size.
wish to change.
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