Canon EOS-1D X Mark II DSLR Camera (Body Only) - Manual (Page 292)

MF: Focusing Manually
292
5
Focus manually.
While looking at the magnified image,
turn the lens’s focusing ring to focus.
After achieving focus, press the < u >
button to return to the normal view.
6
Take the picture.
Check the exposure, then press the
shutter button completely to take the
picture (p.272).
In magnified view, the exposure is locked. (Shutter speed and aperture will
be displayed in red.)