Canon Powershot SD1300 IS User Manual page 45

Screen Display in Dark Shooting Conditions
The display automatically brightens when shooting in dark conditions,
allowing you to check the composition (Night Display function). However, the
brightness of the image on the screen, and the brightness of the actual
image recorded may be different. Screen noise may appear and the
movement of the subject may appear somewhat jagged on the screen. This
has no effect on the recorded image.
Overexposure Warning during Playback
In "Detailed Information Display" (p. 44), overexposed areas of the image
flash on the screen.
Histogram during Playback
Dark
Bright
●
The graph that appears in "Detailed
High
Information Display" (p. 44) is called the
histogram. The histogram shows the
distribution of brightness in an image
Low
horizontally, and the amount of brightness
vertically. When the graph approaches the
right side, the image is bright, but when it
approaches the left side, the image is
dark, and in this way you can judge the
exposure.
Screen Display
45