<s>
The	O
Canon	O
rangefinders	B-Algorithm
of	O
the	O
late	O
1940s	O
and	O
early	O
1950s	O
are	O
Leica-compatible	O
screw-mount	O
cameras	O
.	O
</s>
<s>
Many	O
of	O
these	O
can	O
still	O
be	O
used	O
,	O
and	O
are	O
similar	O
in	O
function	O
to	O
the	O
Leica	B-Algorithm
III	I-Algorithm
.	O
</s>
<s>
The	O
noticeable	O
difference	O
between	O
The	O
Canon	O
and	O
other	O
LTM	O
(	O
leica	O
thread	O
mount	O
)	O
rangefinders	B-Algorithm
is	O
the	O
angled	O
cornered	O
casing	O
.	O
</s>
<s>
Viewfinder	O
and	O
rangefinder	B-Algorithm
are	O
integrated	O
,	O
and	O
a	O
three-way	O
switch	O
allows	O
a	O
view	O
for	O
50mm	O
,	O
100mm	O
,	O
and	O
critical	O
rangefinder	B-Algorithm
use	O
.	O
</s>
