Canon 814XL-S User Manual
Page 116
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AE LOCK
The AE LOCK position of the AE dial is used
to set and hold a specific exposure, as might be
desirable when panning a moving subject. Point
the camera at the subject, compose your shot
and check the aperture indication in the viewfin
der. Push the release button in the center of the
exposure control dial, and rotate the dial clock
wise to position at AE LOCK. The manual aper
ture warning lamp will light up in the viewfinder
to remind you that the camera is not in the AE
mode. The f/stop locked in at the time the AE
dial was moved to the AE LOCK position remains
unchanged during the shooting unless the AE
dial is moved to another position.
MANUAL EXPOSURE
The MANUAL position of the exposure control
dial allows you to set the f-stop manually with
the aperture control lever. This function is
especially useful when filming scenes in which
the subject is backed by extremely bright light, or
when exposure compensation of more than one
f-stop is necessary.