12
The exposure counter is an additive type which shows the number of frames exposed.
Starting from "S", the counter on the Film Back GS 120 (6 x 7) shows numbers from 1 to 10,
while Film Back GS 220 (6 x 7) shows numbers from 1 to 20. "S", "10" and "20" are orange-
colored, in the above case, and all other numbers are white.
Upon loading the film, tear off the end flap from the empty film pack-
age and insert it in the film type indicator frame. This will help you
keep track of the film loaded in the film back, even when two or more
film backs are used with different types of films.
9. Film Type Indicator Frame
10. Exposure Counter
The film winding crank automatically stops, when rotated completely
one time in the forward direction, with film advanced one frame and
shutter cocked, at the same time.
Or, short, rapid strokes, up to an accumulated full rotation, will also do
the job because of a ratcheted mechanism.
* The mirror lock-up lever must be vertical at all times, except when
shooting with the mirror locked up. (See 24. Mirror Lock-up.)
11. Film Winding / Shutter Cocking
