Specifications

ENG-5
To shoot in autofocus mode, set the focus mode
switch to AF.
To use only manual focusing, set the focus
mode switch to MF, and focus by turning the
focusing ring.
2. Setting the Focus
Mode
AF
STABILIZER
MF
3. Switching the
Focusing Range
The focusing range can be selected by this
switch to suit the shooting situation. This can
reduce the time needed for autofocusing.
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. – ∞