<s>
The	O
Leica	B-Algorithm
II	I-Algorithm
is	O
a	O
rangefinder	B-Algorithm
camera	I-Algorithm
introduced	O
by	O
Leica	O
in	O
1932	O
.	O
</s>
<s>
They	O
were	O
the	O
first	O
Leica	O
cameras	O
with	O
a	O
built-in	O
rangefinder	B-Algorithm
.	O
</s>
<s>
Several	O
models	O
were	O
produced	O
over	O
the	O
years	O
,	O
in	O
parallel	O
with	O
the	O
Leica	B-Algorithm
III	I-Algorithm
series	O
from	O
1933	O
.	O
</s>
<s>
The	O
Leica	B-Algorithm
II	I-Algorithm
uses	O
a	O
coupled	B-Algorithm
rangefinder	I-Algorithm
distinct	O
from	O
the	O
viewfinder	O
.	O
</s>
<s>
A	O
mere	O
four	O
copies	O
of	O
the	O
gold-plated	O
Leica	B-Algorithm
Luxus	I-Algorithm
II	I-Algorithm
were	O
made	O
.	O
</s>
<s>
The	O
popular	O
Soviet	O
camera	O
,	O
the	O
FED	O
1	O
,	O
was	O
a	O
clone	O
of	O
the	O
Leica	B-Algorithm
II	I-Algorithm
.	O
</s>
