Upper Indicator; Lower Indicator - Canon PowerShot SD100 User Manual

Indicators
The indicators beside the viewfinder light or blink when the ON/OFF button
or shutter button is pressed.

Upper Indicator

Green:
Blinking Green: Recording to SD card/Reading SD card/Erasing from SD
Orange:
Blinking Orange: Ready to shoot (camera shake warning)

Lower Indicator

Yellow: Macro mode/Infinity mode/Focus lock (Method 2, p. 76)
Blinking Yellow: Focusing difficulty (1 beep sounds)
Although you can press the shutter button, you are
recommended to use the focus lock (p. 76)
Ready to shoot
card/Transmitting data (during a computer connection)
Ready to shoot (flash on)
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