Slow synchronisation
Some cameras permit slow flash synchronisation
(SLOW, SLOW 1 or SLOW 2) which will provide
added prominence to the background at lower
ambient light levels. This is achieved by matching
the shutter speed to the ambient light. According-
ly, shutter speeds slower than the flash sync
speed (e.g. shutter speeds up to 30 sec.) are auto-
matically adjusted by the camera.
SLOW 1 stands for 1st curtain synchronisation,
SLOW 2 for 2nd curtain synchronisation. Slow
synchronisation is set on the camera (see camera
manual).
Use a tripod to avoid camera shake with slow
shutter speeds! When setting the shutter
speed manually, find out if the ambient light
would be sufficient for a complete illumination
of the subject. Otherwise overexposure may
result.
HSS short-term synchronisation
With HSS short-term synchronisation, it is also
possible to operate the flash using shorter flash
synchronisation time shutter speeds.
Certain makes of camera (see operating instruc-
tion), mecablitz 45 CL-4 digital support short-term
synchronisation in TTL and manual flash modes.
In some systems, short-term synchronisation
can in some cases reduce the flash factor and
as a result the range of the flash to a signifi-
cant extent.
Adjustment procedure
• Switch on flash and camera.
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