<s>
The	O
Sigma	B-Algorithm
SD9	I-Algorithm
is	O
a	O
digital	B-Device
single-lens	I-Device
reflex	I-Device
camera	I-Device
(	O
DSLR	B-Device
)	O
produced	O
by	O
the	O
Sigma	O
Corporation	O
of	O
Japan	O
.	O
</s>
<s>
It	O
was	O
Sigma	O
's	O
first	O
digital	B-Device
camera	I-Device
,	O
and	O
was	O
the	O
first	O
production	O
camera	O
to	O
use	O
the	O
unique	O
Foveon	B-Algorithm
X3	I-Algorithm
image	O
sensor	O
,	O
which	O
reads	O
full	O
color	O
at	O
each	O
pixel	B-Algorithm
site	O
.	O
</s>
<s>
The	O
SD9	O
had	O
two	O
separate	O
power	O
systems	O
;	O
one	O
set	O
of	O
CR-123A	O
lithium	O
batteries	O
in	O
the	O
handgrip	O
powered	O
the	O
camera	O
functions	O
,	O
while	O
another	O
pair	O
of	O
CR-V3	O
batteries	O
or	O
four	O
AA	O
size	O
rechargeable	B-Architecture
batteries	I-Architecture
in	O
a	O
battery	O
tray	O
in	O
the	O
base	O
powered	O
the	O
digital	O
functions	O
.	O
</s>
<s>
The	O
SD9	O
was	O
succeeded	O
by	O
an	O
updated	O
model	O
,	O
the	O
SD10	B-Algorithm
,	O
which	O
addressed	O
the	O
power	O
and	O
low-light	O
issues	O
.	O
</s>
<s>
Version	O
6.x	O
is	O
free	O
Download	O
for	O
Windows	O
7+	O
und	O
Mac	B-Application
OS	I-Application
ab	O
Version	O
10.7	O
(	O
6.3.x	O
)	O
.Actual	O
Versions	O
are	O
6.5.4	O
(	O
Win	O
7+	O
)	O
and	O
6.5.5	O
(	O
MacOSX	O
10.9	O
+	O
)	O
.	O
</s>
