Pentax K-7 Operating Manual page 30

• Histogram Display
The following histograms can be displayed when playing back still
pictures. The "Brightness histogram" shows the distribution of brightness
and the "RGB histogram" shows the distribution of color intensity. Use the
four-way controller (• •) to switch between Brightness histogram and
RGB histogram.
1
6 5 4 3 2 6 5 4 3 2
Brightness histogram RGB histogram
1 Histogram (Brightness) 7 Color Space
2 Folder number-File number 8 Histogram (R)
3 Protect setting 9 Histogram (G)
4 Aperture 10 Histogram (B)
5 Shutter speed 11 Switch Brightness histogram/
6 File Format RGB histogram
* Indicator 3 appears only for images with Protect setting.
Areas affected bY bright or dark portions blink if [Bright/Dark Area] Warning is
set to _ (On)in [Playback Display Method] in the [r-€] Playback 1] menu.
(p.215)