Camera Settings (continued)
The shutter speed of some Canon cameras changes automatically if the shooting mode dial is set to Av and the brightness is set by turning the aperture adjustment ring. Therefore the shutter speed is not required to be set additionally as when using the M mode.
(The camera settings discussed apply to the Canon 40D camera. Settings for the camera or the menu may be changed depending on the model or due to a menu upgrade. Refer to the camera manual or contact the camera manufacturer for more detailed information.)