At exposure scale every following value is two times preceding one. The
diaphragm is f-numbered in such a manner that the pointer moving to a
stop increases of decreases the amount of light for exposure two times.
For instance the exposure time is 1/60 second at f/5.6 and if the lens has
been stopped down to f/8 in other equivalent conditions the shutter should
be set to 1/30 second.
Exposures and f-numbers carry the denominators only, as 15 instead of
1/15, 4.5 instead of 1/4.5 and so on.
The diaphragm scale between values 8 and 11 and distance scale
between 8 and 15 are marked with white dots. With diaphragm scale
pointer and distance scale index set to these dots all the images of objects
at a distance of 4.5 m to infinity are obtained sharp.
CAMERA OPERATION PROCEDURES
Loading the Camera
Taking the camera in your left hand, open the camera back turning for this
aim lock head (28)[Fig.6] until the index on the head and the dot on the
body are matched.
For shooting 4.5 * 6 cm pictures, put limiting frame (36) [Fig.8] on the film
gate.
Turning the film rewinding knob (18) [Fig.3], bring the spool slot at position
convenient for loading the film protective paper end.
Break the seal of the film protective paper and insert the spool with the
Summary of Contents for Lubitel 166
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