Af-Beam (Af Auxiliary Light) - Metz mecablitz 52 AF-1 Pentax digital Mode D'emploi

10.3 AF-BEAM (AF auxiliary light)

If the AF metering system of a digital AF reflex
camera is unable to focus due to insufficient
ambient lighting, the camera activates the
AF auxiliary light built into the flash unit.
This projects a stripe pattern onto the subject
which the camera uses to focus.
With the "AF-BEAM" function, the AF auxiliary
light can be switched on or off.
The range is approx. 6 m... 9 m (with a stan-
dard 1.7/50 mm lens). Parallax error bet-
ween the lens and AF auxiliary light
the close-up range with the AF auxiliary light
to approximately 0.7 m to 1 m.
If the automatic AF auxiliary light is to be acti-
vated by the camera, the "AF-S" autofocus
mode must be set on the camera and the flash
unit must indicate flash readiness.
Some camera models support only the came-
ra's internal AF auxiliary light. In this case,
the automatic AF auxiliary light of the flash
unit is not activated (as in the case of com-
pact cameras; see the camera's operating
instructions).
Low-speed zoom lenses can significantly cur-
tail the range of the AF auxiliary light!
Some cameras support the AF auxiliary light
in the flash unit only with the camera's cen-
tral AF sensor. If a peripheral AF sensor
selected, then the AF auxiliary light will not
be activated in the flash unit!
MOD.LIGHT
AF BEAM
m/ft
limits
AF BEAM
Off
On
is
Setting procedure
D
• Press the button as often as it takes
for the selection menu to appear.
OPTION
• Press the sensor button on the
touch display.
• Press the sensor buttons on the
touch display and select "AF BEAM".
AF BEAM
• Press the sensor button on the
touch display.
On Off
• Press the or sensor button on the
touch display.
The setting is adopted immediately.
k
167