Canon EOS40D Aperture-Priority AE, Set the Mode Dial to f Set the desired aperture

f: Aperture-Priority AE

In this mode, you set the desired aperture and the camera sets the shutter speed automatically to obtain the correct exposure suiting the subject brightness. This is called aperture-priority AE. A higher f/ number (smaller aperture hole) will make more of the foreground and background fall within acceptable focus. On the other hand, a lower f/ number (larger aperture hole) will make less of the foreground and background fall within acceptable focus.

* <f> stands for Aperture value (aperture opening).

With a large aperture opening With a small aperture opening

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Set the Mode Dial to <f>.

Set the desired aperture.

While looking at the LCD panel, turn the <6> dial.

Focus the subject.

Press the shutter button halfway.

XThe shutter speed is set automatically.

4 Checkshoot. the viewfinder display and

As long as the shutter speed is not blinking, the exposure will be correct.

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