<s>
Zorki	B-Algorithm
(	O
,	O
meaning	O
sharp-sighted	O
)	O
is	O
the	O
name	O
of	O
a	O
series	O
of	O
35mm	O
rangefinder	B-Algorithm
cameras	I-Algorithm
manufactured	O
in	O
the	O
Soviet	O
Union	O
between	O
1948	O
and	O
1978	O
.	O
</s>
<s>
The	O
Zorki	B-Algorithm
was	O
a	O
product	O
of	O
the	O
Krasnogorsk	O
Mechanical	O
Factory	O
(	O
KMZ	O
)	O
,	O
which	O
also	O
produced	O
the	O
Zenit	B-Application
single	B-Algorithm
lens	I-Algorithm
reflex	I-Algorithm
camera	I-Algorithm
(	O
SLR	B-Algorithm
)	O
.	O
</s>
<s>
The	O
first	O
Zorki	B-Algorithm
cameras	O
are	O
inexpensive	O
Leica	B-Algorithm
II	I-Algorithm
copies	O
just	O
like	O
the	O
FED	O
,	O
but	O
later	O
models	O
are	O
considerably	O
different	O
from	O
the	O
Leica	O
.	O
</s>
<s>
When	O
using	O
most	O
Zorki	B-Algorithm
cameras	O
,	O
the	O
shutter	O
speed	O
should	O
only	O
be	O
set	O
after	O
the	O
shutter	O
has	O
been	O
cocked	O
.	O
</s>
<s>
This	O
especially	O
affects	O
all	O
Zorki	B-Algorithm
cameras	O
with	O
slow	O
shutter	O
speeds	O
under	O
1/30	O
of	O
a	O
second	O
,	O
in	O
particular	O
the	O
Zorki-3	O
and	O
Zorki-4	O
.	O
</s>
<s>
The	O
first	O
Zorki	B-Algorithm
was	O
the	O
Zorki	B-Algorithm
(	O
called	O
"	O
Zorki	B-Algorithm
1	O
"	O
by	O
some	O
for	O
clarity	O
,	O
although	O
it	O
never	O
had	O
a	O
number	O
in	O
the	O
name	O
)	O
,	O
an	O
exact	O
copy	O
of	O
the	O
1932	O
Leica	B-Algorithm
II	I-Algorithm
rangefinder	B-Algorithm
.	O
</s>
<s>
Introduced	O
in	O
1948	O
,	O
the	O
"	O
Zorki	B-Algorithm
"	O
was	O
the	O
first	O
35mm	O
camera	O
made	O
by	O
KMZ	O
.	O
</s>
<s>
The	O
Zorki	B-Algorithm
S	O
of	O
1955	O
added	O
flash	O
synchronization	O
.	O
</s>
<s>
The	O
Zorki	B-Algorithm
2	O
(	O
1954	O
)	O
is	O
similar	O
to	O
the	O
Zorki	B-Algorithm
but	O
features	O
an	O
updated	O
rewind	O
mechanism	O
,	O
a	O
self	O
timer	O
and	O
strap	O
lugs	O
.	O
</s>
<s>
There	O
is	O
a	O
later	O
flash	O
version	O
called	O
the	O
Zorki	B-Algorithm
2S	O
.	O
</s>
<s>
Introduced	O
in	O
1951	O
,	O
the	O
Zorki	B-Algorithm
3	O
is	O
somewhat	O
similar	O
to	O
the	O
Leica	B-Algorithm
III	I-Algorithm
.	O
</s>
<s>
It	O
offers	O
a	O
number	O
of	O
improvements	O
over	O
the	O
original	O
Zorki	B-Algorithm
,	O
including	O
a	O
large	O
combined	O
viewfinder	O
with	O
the	O
rangefinder	B-Algorithm
builtin	O
,	O
a	O
removable	O
back	O
,	O
and	O
a	O
larger	O
and	O
faster	O
Jupiter-8	O
(	O
Zeiss	O
Sonnar	O
copy	O
)	O
lens	O
.	O
</s>
<s>
This	O
mechanism	O
was	O
unreliable	O
,	O
so	O
the	O
improved	O
Zorki	B-Algorithm
3M	O
of	O
1954	O
(	O
also	O
produced	O
in	O
1955	O
)	O
combines	O
all	O
of	O
the	O
shutter	O
speeds	O
on	O
a	O
single	O
dial	O
.	O
</s>
<s>
The	O
Zorki	B-Algorithm
3S	O
,	O
introduced	O
in	O
1955	O
,	O
is	O
a	O
Zorki	B-Algorithm
3M	O
with	O
flash	O
sync	O
.	O
</s>
<s>
The	O
Zorki	B-Algorithm
4	O
,	O
1956	O
,	O
is	O
a	O
Zorki	B-Algorithm
3S	O
with	O
self	O
timer	O
added	O
.	O
</s>
<s>
The	O
Zorki	B-Algorithm
4K	O
is	O
identical	O
but	O
used	O
an	O
advance	O
lever	O
instead	O
of	O
the	O
old-style	O
wind	O
knob	O
.	O
</s>
<s>
With	O
over	O
2	O
million	O
units	O
produced	O
,	O
the	O
Zorki	B-Algorithm
4	O
is	O
the	O
most	O
successful	O
Zorki	B-Algorithm
and	O
has	O
a	O
reputation	O
as	O
one	O
of	O
the	O
best	O
Russian	O
cameras	O
,	O
although	O
the	O
self	O
timer	O
and	O
slow	O
shutter	O
speeds	O
are	O
unreliable	O
.	O
</s>
<s>
The	O
Zorki	B-Algorithm
Mir	O
of	O
1959	O
is	O
a	O
lower-cost	O
Zorki	B-Algorithm
4	O
with	O
fewer	O
shutter	O
speeds	O
.	O
</s>
<s>
The	O
Zorki-35M	O
full-frame	O
35mm	O
coupled-rangefinder	O
camera	O
is	O
from	O
a	O
project	O
undertaken	O
by	O
KMZ	O
designer	O
N	O
.	O
Marienkov	O
during	O
the	O
late	O
1960s	O
(	O
the	O
"	O
M	O
"	O
is	O
his	O
"	O
signature	O
"	O
camera	O
;	O
he	O
also	O
designed	O
the	O
Zorki	B-Algorithm
3M	O
and	O
the	O
Zenit	B-Application
3M	O
)	O
.	O
</s>
<s>
It	O
is	O
based	O
on	O
the	O
body	O
of	O
the	O
Zenit	B-Application
E	O
and	O
some	O
of	O
the	O
advanced	O
design	O
features	O
of	O
the	O
Zenit	B-Application
D	O
,	O
but	O
is	O
a	O
rangefinder	B-Algorithm
rather	O
than	O
SLR	B-Algorithm
camera	I-Algorithm
.	O
</s>
<s>
It	O
was	O
probably	O
an	O
attempt	O
to	O
make	O
an	O
updated	O
alternative	O
for	O
the	O
then	O
aging	O
Zorki	B-Algorithm
4	O
.	O
</s>
<s>
The	O
Zorki	B-Algorithm
5	O
is	O
an	O
updated	O
model	O
similar	O
to	O
the	O
FED	O
2	O
.	O
</s>
<s>
Like	O
early	O
Leicas	O
,	O
the	O
Zorki	B-Algorithm
5	O
is	O
loaded	O
with	O
film	O
by	O
removing	O
the	O
bottom	O
plate	O
.	O
</s>
<s>
However	O
,	O
both	O
versions	O
of	O
the	O
Zorki	B-Algorithm
5	O
have	O
a	O
flaw	O
where	O
cycling	O
the	O
shutter	O
with	O
no	O
lens	O
on	O
the	O
camera	O
causes	O
the	O
rangefinder	B-Algorithm
arm	O
to	O
get	O
caught	O
up	O
in	O
the	O
shutter	O
mechanism	O
,	O
possibly	O
breaking	O
the	O
camera	O
in	O
the	O
process	O
.	O
</s>
<s>
The	O
Zorki	B-Algorithm
6	O
fixed	O
this	O
problem	O
with	O
the	O
Zorki	B-Algorithm
5	O
by	O
moving	O
the	O
rangefinder	B-Algorithm
arm	O
to	O
the	O
other	O
side	O
of	O
the	O
lens	O
mount	O
and	O
introduced	O
an	O
Zenit-style	O
swing	O
back	O
for	O
easier	O
loading	O
.	O
</s>
<s>
The	O
Zorki	B-Algorithm
10	O
is	O
a	O
modern-style	O
35mm	O
rangefinder	B-Algorithm
camera	I-Algorithm
with	O
a	O
selenium	O
light	O
meter	O
and	O
shutter	B-Algorithm
priority	I-Algorithm
automatic	O
exposure	O
introduced	O
in	O
1964	O
.	O
</s>
<s>
The	O
Zorki	B-Algorithm
11	O
is	O
a	O
cheaper	O
model	O
without	O
the	O
rangefinder	B-Algorithm
,	O
and	O
the	O
Zorki	B-Algorithm
12	O
is	O
a	O
variant	O
using	O
Agfa	O
's	O
cartridges	O
.	O
</s>
<s>
The	O
Zorki	B-Algorithm
10	O
is	O
a	O
fixed-lens	O
Zorki	B-Algorithm
coupled	B-Algorithm
rangefinder	I-Algorithm
camera	I-Algorithm
with	O
an	O
integrated	O
light	O
meter	O
.	O
</s>
<s>
This	O
was	O
the	O
first	O
fully	O
automatic	O
camera	O
produced	O
in	O
the	O
former	O
Soviet	O
Union	O
,	O
as	O
well	O
as	O
the	O
first	O
to	O
use	O
ASA/DIN	O
markings	O
rather	O
than	O
the	O
Soviet	O
GOST	O
numbers	O
,	O
however	O
these	O
ASA	O
numbers	O
were	O
still	O
mostly	O
useless	O
as	O
they	O
did	O
n't	O
match	O
any	O
known	O
film	O
speeds	O
(	O
some	O
Zorki	B-Algorithm
10	O
cameras	O
apparently	O
had	O
GOST	O
numbers	O
instead	O
of	O
ASA	O
though	O
,	O
as	O
it	O
's	O
shown	O
in	O
a	O
Polish	O
camera	O
manual	O
)	O
.	O
</s>
<s>
The	O
Zorki	B-Algorithm
11	O
is	O
a	O
Zorki	B-Algorithm
10	O
without	O
the	O
coupled	B-Algorithm
rangefinder	I-Algorithm
mechanism	O
,	O
but	O
with	O
distance	O
symbols	O
visible	O
in	O
the	O
viewfinder	O
.	O
</s>
