<s>
The	O
Leica	B-Algorithm
III	I-Algorithm
is	O
a	O
rangefinder	B-Algorithm
camera	I-Algorithm
introduced	O
by	O
Leica	O
in	O
1933	O
,	O
and	O
produced	O
in	O
parallel	O
with	O
the	O
Leica	B-Algorithm
II	I-Algorithm
series	O
.	O
</s>
<s>
The	O
Leica	B-Algorithm
III	I-Algorithm
uses	O
a	O
coupled	B-Algorithm
rangefinder	I-Algorithm
distinct	O
from	O
the	O
viewfinder	O
.	O
</s>
<s>
+	O
Leica	B-Algorithm
III	I-Algorithm
models	O
Model	O
name	O
Manufacturing	O
dates	O
Features	O
or	O
improvements	O
ImageLeica	O
F	O
(	O
Leica	B-Algorithm
III	I-Algorithm
)	O
1933	O
–	O
1939	O
like	O
II	O
but	O
with	O
slow	O
speeds	O
on	O
frontal	O
dial	O
*	O
150px|Leica	O
250	O
1933	O
–	O
1946	O
Leica	B-Algorithm
III	I-Algorithm
or	O
IIIa	O
with	O
250-image	O
magazines	O
(	O
10	O
metres	O
of	O
film	O
)	O
150px|Leica	O
G	O
(	O
Leica	B-Algorithm
IIIa	I-Algorithm
)	O
1935	O
–	O
1940	O
adds	O
1/1000	O
speed	O
150px|Leica	O
IIIb	O
1938	O
–	O
1940	O
Rangefinder	B-Algorithm
and	O
view	O
windows	O
closer	O
together	O
150pxLeica	O
IIIc	O
1940	O
–	O
1951die-cast	O
body	O
,	O
slightly	O
longer	O
,	O
redesigned	O
shutter	O
featuring	O
ball	O
bearings	O
150px|Leica	O
IIId	O
1940	O
–	O
1945Very	O
rare	O
,	O
only	O
427	O
were	O
built	O
Leica	O
IIIf	O
1950	O
–	O
1956	O
Introduced	O
in	O
time	O
for	O
Christmas	O
1950	O
.	O
</s>
