Canon EF 24-70mm f2.8L II USM - Manual (Page 7)

ENG-6
2. Setting the Focus Mode 3. Zooming
After autofocusing in ONE SHOT AF mode, focus
manually by pressing the shutter button halfway
and turning the focusing ring. (Full-time manual
focus)
To shoot in autofocus (AF) mode, set the focus
mode switch to AF.
To shoot in manual focus (MF) mode, set the
focus mode switch to MF, and focus by turning
the focusing ring.
The focusing ring always works, regardless of
the focus mode.
To zoom, rotate the zoom ring.
Be sure to finish zooming before focusing. Zooming
after focusing can affect the focus.
COP
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