Canon EOS 60D EOS 60D Instruction Manual - Page 117

f: Aperture-Priority AE If the "30"" shutter speed blinks, it indicates underexposure. Turn the dial to set a larger aperture (smaller f/number) until the blinking stops or set a higher ISO speed. If the "8000" shutter speed blinks, it indicates overexposure. Turn the dial to set a smaller aperture (larger f/number) until the blinking stops or set a lower ISO speed. Aperture Display The higher the f/number, the smaller the aperture opening will be. The apertures displayed will differ depending on the lens. If no lens is attached to the camera, "00" will be displayed for the aperture. Depth of Field PreviewN Press the depth-of-field preview button to stop down the lens to the current aperture setting. You can check the depth of field (range of acceptable focus) through the viewfinder. A higher f/number will make more of the foreground and background fall within acceptable focus. However, the viewfinder will look darker. The depth-of-field effect can be clearly seen on the Live View image as you change the aperture and press the depth-of-field preview button (p.152). The exposure will be locked (AE lock) while the depth-of-field preview button is pressed. 117