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12 Synchronisation on the
1st or 2nd shutter
curtain (REAR)
Some cameras support synchronisa-
tion with the 2nd shutter curtain
(REAR). Thus, the flash unit is not fired
until the shutter has closed. This is
especially advantageous when ligh-
ting with slow shutter speeds (>
1/30s) and moving objects with their
own light sources since moving light
sources leave behind a trail of light,
instead of in the front as with synchro-
nisation on the 1st shutter curtain. This
results in a more “natural” reproduc-
tion of the situation when the picture
was taken for moving light sources.
Depending on the operating mode,
the camera triggers slower shutter
speeds than the flash sync speed.
In some cameras, in certain operating
modes (e.g. with certain Vari and/or
Object programs or with pre-flash
function against the “red-eye effect”),
REAR operating mode is not possible.
The REAR operating mode cannot be
selected in this case or is automatical-
ly deleted or not performed (see
Camera user manual). The REAR ope-
rating mode is set on the camera (see
Camera user manual). No settings are
necessary on the flash unit, nor is the-
re any display for this mode.
13 Slow synchronisation
(SLOW)
SLOW lighting brings the picture
background into stronger focus with
weak ambient lighting. This is achie-
ved by the camera shutter speeds that
are adjusted to the ambient light.
Thus, automatic shutter speeds are
automatically triggered that are lon-
ger than the flash sync speed (e.g.
shutter speeds up to 30s). Slow syn-
chronisation is activated automatically
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 display for this mode.
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