Operating Instructions

of exposure times and diaphragms for the definite
illumination and the film sensitivity. Any of these
combinations enables to obtain a negative of normal density.
Figures on the diaphragm scale show the relative aperture
values. Figures from 500 to 2 on the exposure time scale
show values of the exposure times in fractions of a second
and from 1 to 30 show whole seconds. Black figures on the
exposure time scale of the calculator correspond to figures of
the exposure time dial scale. The exposure time and the
appropriate diaphragm chosen depending on conditions of
photographing should be correspondingly set on the camera
and on the lens.
EXPOSURE TIME SETTING
Slightly pulling up the exposure time dial and turning
it round its axis set the selected exposure time figure
against the index mark in the middle of the dial, sink
the dial and fix it.
The figures on the exposure time dial indicate
fractions of a second, and "B" indicates a hand-
controlled exposure time.
To obtain slow shutter speed you should cock the
shutter, set the exposure time dial against "B", press
the shutter release button and turn it counterclockwise
as far as it goes.
After exposure return the release button to its initial
position.
Notes:
1. The exposure time can be set both with cocked and
released shutter.
2. It is good practice to use a tripod when
photographing with slow shutter speed and "B"
exposure.
3. When photographing without flash bulbs the
synchronization setting lever can be set at will within
the range from "X" to "MF" on the side of the film
rewind button.
STOP SETTING