Instruction manual

The functions of the camera release on the housing
The camera release button (28) is coupled with the mirror
reflex function so that the camera is quickly ready for
shooting.
In the "0" position the camera is switched off and the iris
diaphragm (when spring-Ioaded diaphragm control lenses
are used) is fully open. When the release is moved to the
measuring position (27), the iris diaphragm will close to the
value preselected on the diaphragm ring and the light
exposure meter switches on at the same time. The manual
adjustment of the iris diaphragm can be carried out now
according to the diaphragm aberration shown in the
viewfinder image.
When the release is then brought into the "start" position
(26), the camera run is switched on. When spring-Ioaded
diaphragm control lenses are used with cameras fitted with a
built-in automatic exposure meter, the necessary diaphragm
opening
is automatically set and can be controlled in the viewfinder.
When the camera is switched off ("0"position), the
diaphragm will return to the fully open position. If the camera
is again released, the diaphragm will close to the measuring
position of the last shot which is stored.
The "memory button"(24) enables the cameraman to retain a
momentary f-stop, This is of great value for selective
exposure measuring with zoom lenses and for panning,
when momentary fluctuations of the automatic exposure
control, occasioned by the subject, should be avoided.
When the release {28) is moved in the measuring position
(27) and the red knob (a) pressed, the memory button (24)
can be pulled downwards (switch on). When the release is
returned to the "0" position, the memory button is
simultaneously brought upwards and so switched off.