Checking the depth of field – Canon EOS D30 User Manual

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Aperture-Priority AE

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.
1.0 1.2 1.4 1.8 2.0 2.5 2.8 3.5 4.0 4.5 5.6 6.7 8.0 9.5 11 13 16 19 22 27
32 38 45 54 64 76 91
If no lens is mounted on the camera, the aperture setting is displayed as 00.

Checking the Depth of Field

You can press the Depth-of-Field Preview button
to close the aperture to the current aperture
setting, and then verify the range of focus in the

This feature can be used in the Creative zone.


mode, this feature operates when the shutter button is pressed down


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

If the 30” shutter speed blinks, the scene is
too dark. Turn the

dial to reduce the

aperture value (larger aperture).

If the 4000 shutter speed blinks, the scene is
too bright. Turn the

dial to increase the

aperture value (smaller aperture).

You can also set the camera so that you can set the aperture value in 1/3-stop

increments. (C.Fn-4 →124)

You can fix the shutter speed at 1/200 second for shooting with a flash.
(C.Fn-6-1 →126)