Metz Mecablitz 34 AF-3M - Manual (Page 7)

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3. Setting the mecablitz into operation
3.1 Preconditions
The mecablitz must only be used with TTL
flash controlled cameras!
The sensor of TTL flash controlled cameras
measures the light reaching the film through
the camera lens and instantly cuts out the
flash when the film has been correctly expo-
sed. Please refer to the camera’s operating
instructions to find out whether your camera
features this function.
A full-power flash is fired if the camera does
not feature TTL flash control!
In other words: Without TTL flash control, the
mecablitz fires an unmeasured flash at maximum
output.
If there is a flashgun integrated in the camera it
must be switched off or completely folded
down when the mecablitz is used.
Ǻ
Fig. 3: Switching the flashgun on and off
OFF ON
3.2 Switching the flashgun on and off
Set the main switch in the ON position to turn on
the flashgun. The green flash-ready indicator
lights up to indicate flash readiness.
Set the main switch in the OFF position to turn off
the flashgun.