Canon EF 400mm f/4 DO IS USM Instructions Manual - Page 11
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Focus Preset
< How to Focus at the Preset Distance >
By turning the playback ring to the left or right,
the focus shifts as far as the preset distance.
Focus will shift freely released of AF focusing
while the playback ring is still turned.
O
O
If the focus preset switch was set to
will sound twice.
Setting the focus mode switch to power focus
(PF) when using the lens with the following
cameras enables focus change to a preset
focusing distance at a slow speed during movie
shooting. Also, you can make a 2-step change
in focus shift speed depending on the angle that
the playback ring is rotated to.
EOS-1D X, EOS 5D Mark III, EOS 6D, EOS
70D, EOS REBEL T5i/700D, SL1/100D,
T4i/650D, T5/1200D
EOS M2* and EOS M when used together with
Mount Adapter EF-EOS M
O
O
When turning the playback ring, keep your finger
away from the shutter button. In One-Shot AF
mode, the exposure will be locked when you
press the shutter button halfway and focus is
achieved. So if you press the shutter button
halfway while turning the playback ring, the
exposure may not be correct.
O
O
When not using the focus preset, set the switch
to OFF.
O
O
The focus preset function will work while a Live
View image is displayed on the camera or when
, the beeper
shooting movies for the following cameras:
EOS-1D X, EOS 5D Mark III, EOS 6D, EOS 70D,
EOS REBEL T5i/700D, SL1/100D, T4i/650D,
T5/1200D
EOS M2* and EOS M when used together with
Mount Adapter EF-EOS M
* Not available in certain countries and regions.
ENG-10