FED 50 - Operating Procedure; Object Selection and Framing

lens the release button will be
interlocked (Fig.. 8). When
using the film with the speed
expressed in the units of COST,
set the nearest value of theunit
of GOST/ISO specified in
theTable. Set the film sensitivit
y
whose value is seen in the
aperture (Fig. 9) by rotating the
disk. The ratio of the speeds of a
used photo
g
raphic material and
of the marking on the camera
scale is specified in the Table.
Fig. 8
Speed of used
photographic
material in
the unite of
GOST/ISO
Marking on
scale
Speed of used
photographic
material In
the units of DIN
Marking on
scale
16; 20 16 * 13;14 13*
25 25 15 15
32; 40 32* 16;17 16*
50 50 18 18
64;80 64* 19;20 19*
100 100 21 21
125;160 125* 22;23 22*
200 200 24 24
250;320 250* 25;26 25*
400 400 27 27
6. OPERATING PROCEDURE
Choose an object for shooting by
observing through the eyepiece
the picture boundaries,
designated by the lighted cutting
frame. When the ob
j
ect is located
at a distance of 1—2 m, the upper
and side boundaries of a picture
are determined by parallax
correction marks 1,2,3 (Fig. 10).
Fig. 9