Canon EF 400mm f/2.8L IS USM User Manual (en)

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ENG-5
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.
2. Setting the Focus
Mode
3. Switching the Focusing
Distance Range
You can set the focusing distance range with a
switch. By setting a suitable focusing distance
range, the actual autofocusing time will be shorter.
2.5m
AF
MF
2.5m 6.4m
6.4m
Lens
Ranges
2.5 m/8.2 ft. – 
EF300mm f/2.8L IS USM
2.5 m/8.2 ft. – 6.4 m/21.0 ft.
6.4 m/21.0 ft. – 
3 m/9.8 ft. – 
EF400mm f/2.8L IS USM
3 m/9.8 ft. – 10 m/32.8 ft.
10 m/32.8 ft. – 
4.5 m/14.8 ft. – 
EF500mm f/4L IS USM
4.5 m/14.8 ft. – 10 m/32.8 ft.
10 m/32.8 ft. – 
5.5 m/18.0 ft. – 
EF600mm f/4L IS USM
5.5 m/18.0 ft. – 16.2 m/53.2 ft.
16.2 m/53.2 ft. – 
AF
STABILIZER
MF
STABILIZER
ON
OFF
After autofocusing in ONE SHOT AF mode, focus
manually by pressing the shutter button halfway
and turning the focusing ring. (Full-time manual
focus)
02-7524_ENG  10.2.13 9:39 AM  Page 5
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