<s>
The	O
Foca	B-Algorithm
camera	I-Algorithm
was	O
a	O
French-built	O
brand	O
of	O
rangefinder	B-Algorithm
cameras	I-Algorithm
made	O
by	O
Optique	O
&	O
Précision	O
de	O
Levallois	O
.	O
</s>
<s>
The	O
"	O
PF1	O
"	O
(	O
one	O
star	O
)	O
,	O
later	O
named	O
"	O
Standard	O
"	O
,	O
was	O
the	O
basic	O
version	O
without	O
rangefinder	B-Algorithm
.	O
</s>
<s>
After	O
1949	O
,	O
the	O
company	O
developed	O
a	O
bayonet	O
mount	O
version	O
,	O
called	O
"	O
Universel	O
"	O
,	O
with	O
a	O
series	O
of	O
lenses	O
all	O
coupled	O
to	O
the	O
rangefinder	B-Algorithm
.	O
</s>
<s>
Like	O
the	O
Contax	B-Algorithm
II	I-Algorithm
,	O
the	O
Foca	O
had	O
the	O
rangefinder	B-Algorithm
integrated	O
in	O
the	O
viewfinder	O
.	O
</s>
<s>
In	O
1961	O
,	O
the	O
viewfinder	O
became	O
wider	O
(	O
magnification	O
1:1	O
)	O
,	O
collimated	O
and	O
corrected	O
from	O
parallax	B-Device
.	O
</s>
<s>
The	O
rangefinder	B-Algorithm
versions	O
were	O
numbered	O
II	O
.	O
</s>
<s>
"	O
Focaflex	O
"	O
:	O
SLR	B-Algorithm
cameras	I-Algorithm
of	O
special	O
design	O
using	O
a	O
leaf	O
shutter	O
.	O
</s>
