Canon RF 100-400mm F5.6-8 IS USM Instructions Manual page 9

3. Zooming
To zoom, turn the zoom ring.
Minimum focusing distance: changes
according to the focal length.
Minimum
Focal length
focusing distance
100 mm 1.2 m / 3.94 ft.
200 mm 0.88 m / 2.89 ft.
300 mm 0.95 m / 3.12 ft.
400 mm 1.05 m / 3.44 ft.
z
z
z
z
Magnification
0.09x
0.24x
0.34x
0.41x
Be sure to finish zooming before focusing.
Zooming after focusing can affect the focus.
Once a close-up subject is in focus, zooming
may cause the subject to come out of focus.
In this instance, move back from the subject and
refocus.
Blurring may temporarily occur if the zoom ring
is quickly turned.
Please be careful not to let your fingers get
caught in between the lens portion that extends
and the lens body when zooming.
ENG-8