Eclair ACL II Manual Do Utilizador

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Mechanism
The complete silent mechanism is
mounted on the mechanism plate which
greatly reduces the time required for the
normal overhaul and cleaning which we
would strongly recommend to be carried out
by one of our agents.
The claw movement (13) is controlled
by an excentric and a fixed cam (39), the
security is ensured by a counter-cam.
The four drive shafts run in self-
lubrificated bearings and the camera mecha-
nism should NEVER be oiled.
As already indicated page (4), the
aperture plate of hard chromium-plated steel
has, on the left, a fixed guide (11) which is the
edge reference for the film and a spring
loaded guide (12) on the right, which main-
tains the film against the fixed guide.
The two guides (29-30) fig B position
the magazine nose onto the mechanism
plate.
adjusting the diaphragm if he needs a special
effect by under or over exposure, e.g. contrast.
Before filming, the operator sets the
exposure indicator with the aid of his profes-
sional photo- cell exposure meter indicating the
diaphragm opening (stop) of the lens; it gives
him a reference lighting intensity « EO ». The
camera being connected to the battery, he
adjusts the sensitivity potentiometer (34) so that
only the middle diode EO, visible in the
viewfinder, lights up. Thus the camera is now
matched to the exposure meter.
During filming, if the lighting intensity of
the subject varies, the control diodes visible in
the viewf inder will be seen light up either + or -
.  The operator wiII then correct the diaphragm
of his lens so as to maintain the lighting inten-
sity on the film to a value of EO, if he deems it
necessary.
13
14
39
Fig. S
10
Exposure indicator
The ACL camera had to have a very
safe « Exposure Indicator device » because
of the professional work it must ensure.  It
could not be question of an ordinary photo-
cell system due to the fragility of moving
parts; on the other hand, a 100% automatic
device leaves the cameraman no change of
artistic creation.
The basic idea is to leave the camera-
man freedom to determine the exposure of
the film and thus give him the possiblility of
working according to his own technique; in
other words he must have the possibility of