Praktica FX2 - Flash Synchronization; X Contact Synchronization; F Contact Synchronization

Flash synchronizaHi,^
On the front of the camera are two bipolar contact sockets, the X contact (above) for
electronic flashes and short-burning flash bulbs, and the F contact (below) for long-
burning flash bulbs.
X contact (above):
Shutter speed Vso sec. with a flash duration of 0.1 to 1 ms Q/moo to Viooo sec.). For
a flash period of 1 to 5 ms (Viooo to Vaoo sec.) the shutter has to be set to the h mark.
This contact is also designed for short-burning flash bulbs, in which case the shutter
speed depends on the practical flash period. As a rule, this will be V25. or Vio sec.
F contact (below):
With this contact it is possible to synchronize the shortest shutter speeds to those
flash bulbs whose ignition period is less than 10 ms and whose practical flash duration
is greater than 20 ms.
Where longer shutter speeds than Vsoo sec. are being used, the value of 20 ms has to
be added to the shutter speed in ms. The resulting total represents the practical
duration which has to be achieved by the flash.
Important: Never put the flash bulb into the flash unit bejore the. shutter has
been cocked.
14