Basic operation, Shutter button, Main switch – Canon EOS D30 User Manual
The shutter button has two stages. You can press it down halfway or fully. The two levels of
shutter button operation are as follows:
(1) Half press
Pressing the shutter button down halfway activates autofocusing
(AF) and focuses the camera, and also activates the automatic
exposure mechanism and sets the shutter speed and aperture
The exposure (the combination of shutter speed and aperture
value) appears on the LCD panel and in the viewfinder.
(2) Full press
This releases the shutter and takes the picture.
The camera operates only after the Main Switch is set to
Set to this position when the camera is in use.
: The camera does not operate.
Set to this position when not using the camera.
To save battery power, the camera automatically turns off if you do not operate it
for approximately one minute (Auto power off function). To use the camera again,
press the shutter button down halfway, or set the Main Switch to
set it to
again. You can use the Menu functions to set the Auto power off
function to 1, 2, 4, 8, 15, or 30 minutes, or Off. (→121)
If you set the Main Switch to
immediately you take a picture, the access
lamp may blink for a few seconds so that the image is recorded onto the CF card.
The access lamp will go off when the image has been recorded onto the CF card
and the camera will turn off automatically.
This camera has been designed so that taking pictures is given priority over
other operations. Unless the internal memory is full, you will always be able to
take pictures immediately by pressing the shutter button down.
Regardless of the camera status (playback in progress, menu selection in
progress, image recording in progress, etc.), you can return to shooting mode
immediately by pressing the shutter button down halfway.