221f: Aperture-Priority AEThe aperture opening (diaphragm) changes only at the moment whenthe picture is taken. Otherwise, the aperture remains fully open.Therefore, when you look at the scene through the viewfinder or on theLCD monitor, the depth of field will look narrow.Press the depth-of-field preview buttonto stop down the lens to the currentaperture setting and check the depth offield (range of acceptable focus).Depth-of-Field PreviewNIf the “30"” shutter speed blinks, it indicatesunderexposure.Turn the <6> dial to set a larger aperture (lowerf/number) until the shutter speed blinking stops orset a higher ISO speed.If the “8000” shutter speed blinks, it indicatesoverexposure.Turn the <6> dial to set a smaller aperture(higher aperture f/number) until the shutter speedblinking stops or set a lower ISO speed.Aperture DisplayThe higher the f/number, the smaller the aperture opening will be. Thef/number displayed will differ depending on the lens. If no lens is attached tothe camera, “00” will be displayed for the aperture.A higher f/number will make more of the foreground and background fallwithin acceptable focus. However, the viewfinder will look darker.While looking at the Live View image (p.286), you can change theaperture and press the depth-of-field preview button to see how thedepth of field changes.The exposure will be locked (AE lock) while the depth-of-field previewbutton is pressed.COPY
