Canon 1Ds Instruction Manual - Page 86
Aperture-Priority AE
UPC - 013803021820
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Aperture-Priority AE In this mode, you set the desired aperture and the camera sets the shutter speed automatically to suit the subject brightness. The larger or brighter the aperture (lower f/number) the more blurred the background will become. This effect is ideal for portraits. The smaller or darker the aperture (higher f/number), the clearer the focus will be for both near and far objects (wider depth of field). ∗ Av is an abbreviation for Aperture value. With a large aperture With a small aperture 1 While pressing the < > button, turn the < > dial until < > appears on the LCD panel. Then release the < > button. 2 Turn the < > dial to set the desired aperture. 3 Press the shutter button halfway and focus the subject. s The shutter speed and aperture will be displayed. 4 •Take the picture. As long as the shutter speed is not blinking, a standard exposure will be obtained. • If the shutter speed is slower than the reciprocal of the lens focal length (i.e. 1/200 for a 200mm lens), camera shake may cause a blurred picture. 86