Canon EOS 50E - Manual (Page 48)

I. AF Modes and Metering Modes
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Al Servo Eye-Controlled Autofocus
When Eye-Controlled Autofocus Is used with Al Servo AF (even when set by Al Focus AF), a
moving subject can be focus-tracked continuously with your eye. This is called Al Servo Eye-
Controlled Autofocus.
After the eye-selected focusing point focuses the subject and the subject starts moving, you
can continue to focus the subject by looking at the next focusing point which the subject moves
to.
Canceling Eye-Controlled Autofocus
To cancel Eye-Controlled Autofocus, press the focusing point selector and turn the Main Dial to
set it to automatic or manual focusing point selection
Eye-Controlled Depth-of-Field Preview
You can check the depth of field just by looking at the depth-of-field preview mark in the
viewfinder
After focusing the subject, keep
pressing the shutter button
halfway.
• This feature is available when the
Command Dial is set to a Creative Zone
mode and the AF mode is set to One-Shot
AF
Within 6 seconds after focus is
achieved, look at the depth-of-fleld
preview mark in the viewfinder.
The aperture will then stop down
to the set aperture value.
• If 6 seconds elapse before you look at the
depth-of-field mark, focus again and then
look at the depth-of-field mark wifhin 6
sec.
• The aperture returns to the maximum
opening when the shutter button is
released.
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While you check the depth-of-field, you can press the shutter button completely to
take the picture. It Speedlite 380 EX is used, the camera will automatically return
to full aperture before firing the preflash.