Canon RebelT3i EOS 600D Instruction Manual page 75

P: Program AE
_ Shooting Tips
®_Change the ISO speed or use the built-in flash.
To match the subject and ambient lighting level, you can change the
ISO speed (p.79) or use the built-in flash (p.90). in the <P> mode,
the built-in flash will not fire automatically. So under low light, press
the <_> (Flash) button to raise the built-in flash.
_ The program can be shifted. (Program shift)
After pressing the shutter button halfway, turn the <_> dial to
change the shutter speed and aperture setting combination
(program). Program shift is canceled automatically after the picture
is taken. Program shift is not possible with flash.
O
If the "30"" shutter speed and the maximum aperture
blink, it indicates underexposure. Increase the ISO
speed or use flash.
If the "4000" shutter speed and the minimum aperture
blink, it indicates overexposure. Decrease the ISO
speed.
_t] Differences Between <P> and <____._> (Scene Intelligent Auto)
With <__,_>. many functions such the AF mode. drive mode. and built-in
flash are set automatically to prevent spoiled shots. The functions you can
set are limited. With <P>, only the shutter speed and aperture are set
automatically. You can freely set the AF mode. drive mode. built-in flash
and other functions (p.268).
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