Canon EOS Rebel SL2 Mode D'emploi page 46

Basic Shooting Operations
Shutter Button
The shutter button has two steps. You can press the shutter button
halfway. Then you can further press the shutter button completely.
Preventing Camera Shake
Hand-held camera movement during the moment of exposure is called
camera shake. It can cause blurred pictures. To prevent camera shake,
note the following:
• Hold and steady the camera as shown on the preceding page.
• Press the shutter button halfway to autofocus, then slowly press the
shutter button completely.
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Pressing Halfway
This activates autofocusing and the
automatic exposure system that sets the
shutter speed and aperture.
The exposure setting (shutter speed and
aperture) is displayed in the viewfinder
(0).
While you press the shutter button
halfway, the LCD monitor will turn off.
Pressing Completely
This releases the shutter and takes the
picture.