User manual
A
Operating
the
Shutter
Th
e scale at t he
bottom
of
th
e shutter indicates
th
e
op
enings of
th
e
Iri
s dia
phr
ag
m, according
to
t he
"
f."
syste
m.
Th
e t
op
scale of
th
e s
hu
tter indi
cates
th
e different speeds th
at
ca
n be used when making
expos
ur
es.
Wh
en
th
e indicator
"A
" is placed over t he l
ette
r
"
T",
tim
e expos
ur
e of any
dur
at
ion
may
be made.
Pr
ess
th
e
pu
sh-pin at end of
cab
le release " D "
or
pu
sh
down
on
finger release "
C"
to
op
en
th
e s
hutt
er.
Tirrie
th
e expos
ur
e by a watch, Press
th
e push-pin
or
finger release
aga
in
to
close
th
e shutter.
"Bulb"
or
s
hort
time
expos
ur
es are made by plac-
ing
th
e indic
ato
r "A" over t he l
ette
r " B" .
Pr
ess
th
e
pu
sh- pin " D " or finger release
"C"
to
op
en t he
s
hut
te
r and release
it
to
cl
ose t he shu
tte
r. This
mak
es
the exposure.
Th
e s
hu
tte
r wiIl remain
op
en
as long
as
t he
pus
h-pin or release
"C"
'is
und
er
pr
ess
ur
e.
Th
e gra
du
ations,
25
, 50 and 100, re
pr
ese
nt
th
e
speeds of
th
e shu
tte
r for instan
ta
neous expos
ur
es.
NO
T
E-
T
he
lever
"A"
sh
ould
be
used
at
100. only
whe
n
taking m
ov
in
g obj
ec
ts in bright sunshine, and l
ever"
B" mu
st
al
ways
be pl
aced
at
J.7,
7
wh
en
ta
king
this
kind
of
a
picture.
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