Canon EOS-1D X Mark II DSLR Camera (Body Only) - Manual (Page 62)

Basic Operation
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The shutter button has two steps. You can press the shutter button
halfway. Then you can further press the shutter button completely.
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
and on the top LCD panel for approx. 6
sec. (metering timer/
9 ).
Pressing Completely
This releases the shutter and takes the
picture.
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.
Shutter Button
Pressing the < p > button will be the same as pressing the shutter
button halfway.
If you press the shutter button completely without pressing it halfway
first, or if you press the shutter button halfway and then press it
completely immediately, the camera will take a moment before it takes
the picture.
Even during menu display or image playback, you can go back to
shooting-ready state by pressing the shutter button halfway.