PRAKTICA FX 1951-1952 Flash
synchronixation for X and FP with three contacts situated on the
base of the camera; fitted with pre-select diaphragm lenses
PRAKTICA FX 1952-1953 As above,
except that the three flash contacts are situated on the front of
PRAKTICA FX 1953-1954 X synchronized
only., with two flash contacts on the camera front
PRAKTICA FX 1954-1955 As above,
with only one standard flash contact on the camera front. Allowed
a pentaprism to be inserted in the reflex hood for eye-level viewing
PRAKTICA FX 2 1956-1957 X
and FP synchronization with two standard contacts on the camera
front. Introduction of the semi-automatic aperture setting and fully
automatic diaphragm control.
PRAKTICA FX3 1956-1957 Technical
data as FX2; the series III FX was an internal code of the makers.
PRAKTICA F-X 2 1957-1958
In addition to X synchronisation, this version also had the international
standard F synchronisation for flash bulbs; two standard flash contacts
on the front of the camera.