Canon EOS 40D - Manual (Page 84)

84
The camera automatically sets the shutter speed and aperture to suit
the subject’s brightness. This is called Program AE.
* stands for Program.
* AE stands for Auto Exposure.
1
Set the Mode Dial to <d>.
2
Focus the subject.
Look through the viewfinder and aim
the selected AF point over the
subject. Then press the shutter button
halfway.
X The AF point which achieves focus
flashes in red, and the focus
confirmation light in the
viewfinder’s bottom right lights.
(In the One-Shot AF + automatic AF
point selection mode)
X The shutter speed and aperture will
be set automatically and displayed in
the viewfinder and on the LCD panel.
3
Check the shutter speed and
aperture display.
A correct exposure will be obtained
as long as the shutter speed and
aperture display do not blink.
4
Take the picture.
Compose the shot and press the
shutter button completely.
d
: Program AE