Canon EF300mm f/2.8L IS II USM Manuale di istruzioni - Pagina 10

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Canon EF300mm f/2.8L IS II USM Manuale di istruzioni
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.
If the focus preset switch was set to
O
O
will sound twice.
Setting the focus mode switch to power focus
(PF) when using the lens with the EOS-1D X
or EOS 5D Mark III enables focus change at a
slow set 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.
When turning the playback ring, keep your finger
O
O
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.
When not using the focus preset, set the switch
O
O
to OFF.
The focus preset function will not work while a
O
O
Live View image is displayed on the camera.*
* Not applicable to the EOS-1D X or EOS 5D Mark III
In the following cases, the focusing distance scale
(p. 14) will move slightly. It will not affect the image.
, the beeper
• When you press the focus preset button.
• When you turn the playback ring.
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