<s>
The	O
Leica	B-Algorithm
M6	I-Algorithm
is	O
a	O
rangefinder	B-Algorithm
camera	I-Algorithm
manufactured	O
by	O
Leica	O
from	O
1984	O
to	O
2002	O
until	O
its	O
major	O
reissue	O
in	O
2022	O
.	O
</s>
<s>
The	O
M6	O
combines	O
the	O
silhouette	O
of	O
the	O
Leica	B-Algorithm
M3	I-Algorithm
and	O
Leica	B-Algorithm
M4	I-Algorithm
with	O
a	O
modern	O
,	O
off-the-shutter	O
light	O
meter	O
with	O
no	O
moving	O
parts	O
and	O
LED	O
arrows	O
in	O
the	O
viewfinder	O
.	O
</s>
<s>
The	O
M6	O
and	O
M6	O
TTL	O
are	O
mechanical	O
cameras	O
;	O
all	O
functions	O
save	O
the	O
light	O
meter	O
work	O
without	O
batteries	O
,	O
unlike	O
the	O
succeeding	O
M7	B-Algorithm
,	O
which	O
needs	O
electrical	O
power	O
to	O
operate	O
properly	O
.	O
</s>
<s>
A	O
collector	O
's	O
edition	O
of	O
1,640	O
cameras	O
to	O
celebrate	O
the	O
40th	O
anniversary	O
of	O
the	O
Leica	B-Algorithm
M	I-Algorithm
System	O
.	O
</s>
<s>
The	O
shutter	O
dial	O
of	O
the	O
M6	O
TTL	O
is	O
reversed	O
from	O
previous	O
models	O
,	O
turning	O
in	O
the	O
same	O
direction	O
as	O
the	O
light	O
meter	O
arrows	O
in	O
the	O
viewfinder	O
;	O
this	O
feature	O
has	O
continued	O
in	O
the	O
M7	B-Algorithm
,	O
M8	O
,	O
and	O
M9	O
,	O
but	O
not	O
the	O
MP	O
,	O
which	O
returned	O
to	O
the	O
older	O
,	O
smaller	O
diameter	O
,	O
opposite	O
direction	O
shutter	O
speed	O
dial	O
.	O
</s>
<s>
The	O
Leica	B-Algorithm
M6	I-Algorithm
has	O
more	O
special	O
editions	O
than	O
any	O
other	O
M	O
cameras	O
as	O
of	O
2013	O
.	O
</s>
<s>
The	O
following	O
list	O
includes	O
some	O
,	O
but	O
not	O
all	O
Leica	B-Algorithm
M6	I-Algorithm
Special	O
Editions	O
:	O
</s>
