Nikon D300 Complete Manual page 265

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Highlights worked slightly different on the original D1 than

it does on all subsequent Nikon digital SLRs, which could be

important to understand if you're upgrading from a D1 to

the D300. On the original D1, only pixels that were 255,

255, 255 (absolute white) were blinked. On the D300,

pixels "near" absolute white are also blinked (Nikon hasn't

disclosed what level triggers blinking). Basically, Nikon

Thom Hogan's Complete Guide to the Nikon D300

This page can also be made to show

highlights for individual channels (hold

down the Thumbnail button (±) plus

press the > key on the Direction pad until

the RGB, R, G, or B indicator in the

bottom left corner is highlighted).

Adds highlight information to the main

display page on the color LCD for each

image. This information shows locations

of pixels that exceed a certain value by

blinking them. If a large group of pixels

is blinking, you may have overexposed

the image (at a minimum, you're likely

losing highlight detail).

Note that some of the white areas have turned

black in the right-hand screen. These blink to

indicate that these sections of the image have

exceeded the camera's preset white level and are

probably blown out (have no detail).

Troubleshooting