Metz mecablitz 44AF-2 digital, Руководство по эксплуатации

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11 Automatic AF measuring
beam
The automatic AF measuring beam is
activated in the flash unit by the came-
ra when the ambient lighting conditi-
ons become inadequate for automatic
focusing.
A striped pattern is projected onto the
subject which the camera can use to
focus. Depending on the camera’s acti-
vated AF sensor, the AF beam has a
range of approximately 6 m to 9 m
(with a standard 1.7/50 mm lens).
Parallax error between lens and AF
measuring beam
limits the close-up
range with the AF measuring beam to
approximately 0.7 m to 1 m.
To activate the automatic AF measuring
beam
the camera must be set to the
„Single–AF (S)“ or „ONE SHOT“ autofo-
cus mode and the flash unit must indica-
te flash readiness. Some camera models
support only the camera’s internal
AF measuring beam m. In this case, the
automatic AF measuring beam m of the
flash unit is not activated (as in the case
of compact cameras; see the camera’s
operating instructions).
Low-speed zoom lenses can signifi-
cantly curtail the range of the AF mea-
suring beam!
Some cameras support the AF measu-
ring beam
in the flash unit only with
the camera’s central AF sensor.
If a peripheral AF sensor is selected,
then the AF measuring beam
will not
be activated in the flash unit!
12 Triggering control
(auto-flash)
On some cameras the flash will not be
fired when the prevailing light is suffi-
cient for an exposure. When the camera
shutter release is depressed, no flash
exposure is triggered.
In various cameras the triggering con-
trol only works in the full program
mode or „P“ program or must be acti-
vated on the camera (see camera ope-
rating instruc-tions).
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