Basic Operation; Main Switch; Shutter Button - Canon EOS-3 Instructions Manual

1. Basic Operation

Main Switch

The camera operates only after the <
switch has three settings:
When the camera is not to be used, set the Command Dial to <
accidental battery drainage if the shutter button is held down inadvertently.

Shutter Button

You can press the shutter button halfway or all the way.
Hold the camera steadily and press the shutter button slowly without any
jerking movement. The difference between halfway and complete
pressing of the shutter button is explained below. Beginners should
practice pressing the shutter button halfway and completely before
loading any film.
16
> switch is turned on. This main
< >: Lock position. The camera does
not operate. Set to this position
when not using the camera.
< >: To turn on the camera, set to
this position. The "A" stands for
"Advance."
< >: This is the same as <
except that it also enables the
beeper to sound in the following
cases:
• Focus is achieved in One-Shot AF
mode.
• Focus is achieved with manual focus.
• During Eye-Control calibration.
(Short
registration and intermittent beeping
for failed registration.)
beeps for successful
>. This will prevent
>