Canon EOS-1D C - Manual (Page 167)

167
Exposure Control
Select the shooting mode to suit the subject or shooting
objective. You can set the shutter speed and/or aperture
to obtain the exposure you want.
After you press the shutter button halfway and let go, the
exposure values will remain displayed in the viewfinder and
on the top LCD panel for approx. 6 sec. (9).
For the functions settable in each shooting mode, see page
358.
Set the power switch to <1>.
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