Canon EOS 10D instruction manual Depth-of-field Preview, Aperture Value Display

Aperture-Priority AE/ Depth-of-field Preview

Exposure Warnings

•If the “ ” shutter speed blinks, it indicates underexposure. Turn the < > dial to set a larger aperture (lower f/number) until the shutter speed stops blinking.

•If the “ ” shutter speed blinks, it indicates overexposure. Turn the < > dial to set a smaller aperture (higher f/number) until the shutter speed stops blinking.

Aperture Value Display

You can set the aperture in half stops as shown below. The higher the aperture value, the smaller the aperture opening. The range of aperture settings displayed depends on the lens mounted on the camera.

If no lens is mounted on the camera, the aperture setting is displayed as “ ”.

•C.Fn-16-1 enables the safety shift feature. (→p.151)

If a correct exposure cannot be obtained in the aperture-priority AE mode with any shutter speed set by the camera, the camera automatically sets a larger or smaller aperture. This feature is called safety shift.

•With C.Fn-06-1, you can also set the camera so that you can set the aperture value in 1/3-stop increments. (→p.147)

•With C.Fn-03-1, you can fix the shutter speed at 1/200 second for shooting with a flash. (→p.146)

Depth-of-field Preview

The depth of field is the range of acceptable focus in front of and behind the point of focus. (→p.160) The depth of field changes depending on the aperture.

Press the depth-of-field preview button to stop down the aperture and see the range of acceptable focus in the viewfinder.

• This feature can be used in the Creative zone.

•Depth-of-field preview will work after you press the shutter button halfway and achieve

focus in < >.

•The exposure is locked (AE lock) while the Depth-of-Field Preview button is pressed.

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Advanced Operations

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