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13.2 Normal synchronisation
In normal synchronisation the flash unit is triggered
at the beginning of the shutter 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 cus-
tomary (see the camera’s operating instructions).
No settings are necessary on the flash unit, nor is
there any display for this mode.
13.3 Slow synchronisation (SLOW)
A slow exposure (SLOW) gives added prominence to
the image background at lower ambient light levels.
This is achieved by adjusting the shutter speed to
the ambient light. Accordingly, shutter speeds that
are slower than the flash sync speed (e.g., shutter
speeds up to 30 sec.) are automatically adjusted by
the camera. Slow synchronisation is activated auto-
matically on some camera models in connection
with certain camera programs (e.g., a night shot
program, etc.), or it can be set on the camera (see
the camera’s operating instructions). No settings
are necessary on the flash unit, nor is there any dis-
play for this mode.
Slow synchronisation SLOW is set on the camera
(see camera’s operating instructions)! Use a tripod
when shooting with slow shutter speeds to avoid
blurred images!
13.4 Second curtain synchronisation (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 that have their own source of light.
With second-curtain synchronisation, a moving
light source will trail a light streak instead of buil-
ding one up ahead itself, as it does when the flash
is synchronised with the first shutter curtain. In this
way a „more natural“ image of the photographic
situation is produced!
Depending on its operating mode, the camera sets
shutter speeds slower than its sync speed.
On some cameras the REAR function is not possible
in certain operating modes (e.g., certain vari- or
subject programs, or with red eye reduction). In the-
se cases, the REAR mode cannot be selected and/or
is automatically cancelled or ignored (see camera’s
operating instructions).
The REAR mode is set on the camera (see camera’s
operating instructions).
There is no display for REAR mode in the flash unit.
Use a tripod to avoid blurred images!
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