Shutter-Priority AE

Exposure Warnings

If the lens’ maximum aperture (lowest f/number like f/3.5) blinks, it indicates underex- posure.

Turn the < > dial to set a slower shutter speed until the aperture display stops blinking.

If the lens’ minimum aperture (highest f/number like f/22) blinks, it indicates overexpo- sure. Turn the < > dial to set a faster shutter speed until the aperture display stops blinking.

Shutter Speed Display

You can set the shutter speed in half-stop increments as shown below. The shutter

speeds from “ ” to “ ” indicate the denominator of the fractional shutter speed, so

that—for example—“ ” is 1/125 second. For slow speeds, “ ” is 0.7 seconds and “ ” is 15 seconds.

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

In the shutter-priority AE mode, if a correct exposure cannot be obtained with any aperture set by the camera, the camera automatically sets a faster or slower shutter speed. This feature is called safety shift.

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

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Advanced Operations

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Canon EOS 10D instruction manual Shutter Speed Display