Nikon D90 User Manual page 150

II RGB Histogram
1
1
5
=---6
7
=---8
9
1 Protect status 139 5 Histogram (RGB channel). 6 Histogram (red channel)
2 Retouch indicator 209 In all histograms, 7 Histogram (green
3 White balance 95 horizontal axis gives channel)
White balance fine- pixel brightness, vertical 8 Histogram (blue channel)
tuning 97 axis number of pixels. 9 Frame number/
4 Camera name total number of images
1 Displayed only if RGB histogram is selected for Display mode (pg. 163).
• Playback Zoom
To zoom in on the photograph when the histogram is displayed, press
<t<.
(for more information on playback zoom, see page 138). The histogram
will be updated to show only the data for the portion of the image visible
in the monitor.
III
II.
j --------_ ..... , ... --- ,- -
••
.
. .
t ••
f!'~'
If the image is dark, tone distribution will be shifted to the
left.
If the image is bright, tone distribution will be shifted to the
right.
• Histograms
Camera histograms are intended as a guide only and may differ from those displayed in
imaging applications. Some sample histograms are shown below:
If the image contains objects with a wide range of
brightnesses, the distribution of tones will be relatively
even.
Increasing exposure compensation shifts the distribution of tones to the right, while
decreasing exposure compensation shifts the distribution to the left. Histograms can provide
a rough idea of overall exposure when bright ambient lighting makes it difficult to see
photographs in the monitor.
130