Canon EOS Digital Rebel EOS DIGITAL REBEL/EOS 300D DIGITAL Instruction Manual - Page 71

E Aperture-Priority AE / Depth-of-field Preview • If the " " shutter speed blinks, it indicates underexposure. Turn the dial to set a larger aperture value (smaller f/number) until the blinking stops. Or increase the ISO speed. • If the " " shutter speed blinks, it indicates overexposure. Turn the dial to set a smaller aperture value (larger f/number) until the blinking stops. Or decrease the ISO speed. Aperture Value Display The larger the f/number, the smaller the diaphragm will be. The aperture display will differ depending on the lens. When no lens is attached to the camera, " " will be display for the aperture value. Depth-of-field Preview Press the depth-of-field preview button to stop down to the current aperture setting. The diaphragm in the lens will be set to the current aperture so you can check the depth of field (range of acceptable focus) through the viewfinder. This feature can be used in the Creative Zone. •• In the mode, press the shutter button halfway to focus, then press the depth-of-field preview button while still pressing the shutter button halfway. • The exposure is locked (AE lock) while the Depth-of-Field Preview button is pressed. 71