Shooting Tips - Canon EOS 100D Instruction Manual

Shooting Tips

Change the ISO speed. Use the built-in flash.
To match the subject and ambient lighting level, you can change the
ISO speed (p.98) or use the built-in flash (p.111). In the <d> mode,
the built-in flash will not fire automatically. In indoors or during low
light shooting, you should therefore press the <I> (flash) button to
raise the built-in flash.
Change the program using Program shift.
After pressing the shutter button halfway, turn the <6> 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.
Differences Between <d> and <A> (Scene Intelligent Auto)
In the <A> mode, many functions, such as the AF operation and metering
mode, are set automatically to prevent spoiled shots. The functions you can
set are limited. With <d> mode, only the shutter speed and aperture are set
automatically. You can freely set the AF operation, metering mode, and
other functions (p.316).
If the "30"" shutter speed and the lower f/number
blink, it indicates underexposure. Increase the ISO
speed or use flash.
If the "4000" shutter speed and the higher f/number
blink, it indicates overexposure. Decrease the ISO
speed.
d: Program AE
93