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Flash techniques
Tecniche lampo
Técnicas de destello
gives a more realistic impression of movement because the
light streaks behind the light source instead of building up in
front of it, as is the case when the flash is synchronised with
the 1st shutter curtain! Depending on its operating mode, the
camera uses shutter speeds slower than its sync speed.
The REAR function is only possible with cameras fea-
turing this facility. The corresponding setting is made
on the camera (see operating instructions of the given
camera).
7.2.3 Slow synchronisation / SLOW
In certain operating modes, some cameras permit slow flash
synchronisation (SLOW) which will provide added promi-
nence to the background at lower ambient light levels. This is
achieved by matching the shutter speed to the ambient light.
Accordingly, shutter speeds slower than the flash sync speed
are automatically adjusted by the camera. Some cameras
automatically activate SLOW synchronisation in connection
with certain programs (e.g. aperture priority “Av” or “A”,
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