Flash Synchronisation; Automatic Flash Sync Speed Control; Normal Synchronisation - Metz MECABLITZ 44 AF-1 digital Mode D'emploi

11 Flash synchronisation

11.1 Automatic flash sync speed
control
Depending on the camera model and
camera mode, the shutter speed is swit-
ched to flash sync speed when flash
readiness is reached (see the camera's
operating instructions).
Shutter speeds cannot be set faster than
the flash sync speed, or they are swit-
ched automatically to the flash sync
speed. Various cameras have a sync
speed range, for example from 1/60 sec
to 1/250 sec (see the camera's opera-
ting instructions). The sync speed set by
the camera depends on the camera
mode, the ambient light, and the focal
length of the lens used.
Shutter speeds slower than the flash sync
speed can be set according to the
camera mode and the selected flash syn-
chronisation (see 11.3 and 11.4).
If a camera with a between-the-lens
shutter is used, flash sync speed is not
controlled automatically. As a result,
the flash can be used at all shutter
speeds. If you need the full light output
of the flash unit, you should not select a
shutter speed that is any faster than
1/125 sec.

11.2 Normal synchronisation

In normal synchronisation the flash unit
is triggered at the beginning of the shut-
ter time (first curtain synchronisation).
Normal synchronisation is the standard
mode on all cameras. It is suitable for
most flash shots. The camera, depending
on the mode being used, is switched to
the flash sync speed. Speeds between
1/30 sec. and 1/125 sec. are customa-
ry (see the camera's operating instruc-
tions). No settings are necessary on the
flash unit, nor is there any display for
this mode.
11.3 Second curtain synchronisa-
tion (REAR)
Some cameras offer the option of
second-curtain synchronisation (REAR),
in which the flash unit is not triggered
until the end of the exposure time.
This is particularly advantageous when
used with lower shutter speeds (slower
than 1/30 sec.) and moving subjects
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