The following list explains what each setting on the Canon EOS 7D’s Mode dial is used for. You can determine the best digital camera mode for your photographic subjects.
Full Auto: The camera chooses the shutter speed and aperture needed to properly expose the image.
Creative Auto: The camera chooses the shutter speed and aperture needed to properly expose the image. You can control the depth of field, brightness, picture style, and image format using a menu on the camera LCD monitor.
Programmed Auto Exposure: The camera chooses the shutter speed and aperture needed to properly expose the image. You can shift the exposure to change the shutter speed and aperture combination to suit the type of scene you’re photographing.
Aperture Priority: You choose the aperture (f-stop value), and the camera provides the shutter speed needed to properly expose the image.
Shutter Priority: You choose the shutter speed, and the camera provides the aperture (f-stop value) needed to properly expose the image.
Manual: You manually choose the shutter speed and aperture.
Bulb: The shutter stays open as long as the shutter button is pressed. You can also use a remote to trigger the shutter button.
C1, C2, and C3: You can apply your own settings to these buttons.