Canon S1 IS Cause, Problem, Solution, Auto ISO:, ISO 100 equivalent:

Problem	Cause	Solution
Subject in recorded	Insufficient light for shooting.	Set the built-in flash to on.
image is too dark	Subject dark in comparison to the background.	zSet the exposure compensation to a positive (+) setting.
		zUse the AE lock or spot metering function.
		 See Locking the Exposure Setting (AE Lock) (p. 86)
		and Switching between Light Metering Modes (p. 76).
	Subject too far for flash to reach.	zTo use the built-in flash, shoot within the following ranges:
		Auto ISO: 1.0 to 4.2 m (3.3 to 14 ft.) of the subject at the
		maximum wide angle and within 1.0 to 3.0 m (3.3 to 9.8 ft.) at
		the maximum telephoto setting.
		ISO 100 equivalent: 1.0 to 3.8 m (3.3 to 12 ft.) of the subject
		at the maximum wide angle and within 1.0 to 2.5 m (3.3 to 8.2
		ft.) at the maximum telephoto setting.
		zRaise the ISO sensitivity and then shoot.
		 See Changing the ISO Speed (p. 81).
Subject recorded in	Subject too close causing flash to be too bright.	Adjust the flash output with the flash exposure compensation
image is too bright		function (p. 89).
	Subject bright in comparison to the background.	zSet the exposure compensation to a negative (-) setting.
		zUse the AE lock or spot metering function.
		 See Locking the Exposure Setting (AE Lock)(p. 86)
		and Switching between Light Metering Modes (p. 76).
	Light shining directly on subject or reflected off	Change the shooting angle.
	subject into camera.
	Flash set to On.	Set the flash to Auto or Off.
A vertical bar of light	Subject too bright	This is a normal occurrence in devices containing CCDs and
(red, purple) appears on		does not constitute a malfunction. (This red bar of ight will not be
the LCD monitor/in the		recorded when shooting still photos, but it will be recorded when
viewfinder		shooting movies.)

Appendix 133