Canon EF 800mm f/5.6L IS USM Посібник із швидкого старту - Сторінка 9
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7. Focus Preset
By presetting any focusing distance, you can
instantly focus at that point even while you are
shooting a different subject. This function
operates in both the AF and MF modes.
How to Set
Set the focus preset switch to
Press the shutter button halfway to focus the
distance you want to preset.
Press the focus preset button.
• The focused distance will be preset.
• If the focus preset switch was set to
beeper will sound once.
How to Focus at the Preset Distance
While turning the playback ring to the left or
right, press the shutter button completely.
• The lens will focus at the preset distance.
• If the focus preset switch was set to
will sound twice.
• 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
or
.
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
to OFF.
, the
In the following cases, the focusing distance scale
will move slightly. It will not affect the image.
• When you press the focus preset button.
• When you turn the playback ring.
, the beeper
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