Canon EOS-1D 说明手册

87

Exposure Control

Aperture-Priority AE / Depth-of-field Preview

•

C.Fn-16 enables the safety shift feature. (

→p.137)

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.

•

C.Fn-06 enables the aperture to be set in full-stop or 1/2-stop increments instead
of the standard 1/3-stop increments. (

→p.134)

•

For aperture-priority AE, C.Fn-05-2/3 enables the aperture to be set with the
camera even while the lens is detached. (

→p.134)

The depth of field is the range of acceptable focus in
front of and behind the point of focus. (

→p.156) 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.

•

Pressing the depth-of-field preview button also sets AE lock.

•

The depth-of-field preview button does not function during AF operation.

•

If the 30” 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 16000 shutter speed blinks, it indicates overexposure. Turn the
<

> dial to set a smaller aperture (higher f/number) until the shutter

speed stops blinking.