<s>
The	O
EOS-1Ds	B-Algorithm
Mark	I-Algorithm
III	I-Algorithm
is	O
a	O
digital	B-Device
SLR	I-Device
camera	I-Device
body	O
by	O
Canon	O
designed	O
for	O
professional	O
photographers	O
.	O
</s>
<s>
The	O
Canon	B-Algorithm
EOS	I-Algorithm
1Ds	I-Algorithm
Mark	I-Algorithm
III	I-Algorithm
is	O
successor	O
to	O
the	O
EOS-1Ds	B-Algorithm
Mark	I-Algorithm
II	I-Algorithm
and	O
was	O
announced	O
in	O
August	O
2007	O
.	O
</s>
<s>
The	O
camera	O
features	O
a	O
full-frame	B-Algorithm
21.1	O
megapixel	O
CMOS	B-Device
sensor	O
with	O
14-bit	O
analog/digital	O
converters	O
for	O
a	O
total	O
colour	O
depth	O
of	O
16,384	O
tones	O
per	O
pixel	O
.	O
</s>
<s>
It	O
features	O
a	O
three-inch	O
(	O
76mm	O
)	O
LCD	B-Device
screen	I-Device
,	O
capable	O
of	O
"	O
Live	O
View	O
,	O
"	O
and	O
dual	O
DIGIC	O
III	O
processors	O
allowing	O
it	O
to	O
shoot	O
at	O
up	O
to	O
five	O
frames	O
per	O
second	O
.	O
</s>
<s>
The	O
EOS-1Ds	O
features	O
many	O
technologies	O
first	O
seen	O
in	O
the	O
Canon	B-Algorithm
EOS-1D	I-Algorithm
Mark	I-Algorithm
III	I-Algorithm
,	O
such	O
as	O
the	O
63-zone	O
exposure	O
metering	O
,	O
19	O
cross-type	O
auto	O
focus	O
system	O
,	O
a	O
3.0	O
"	O
LCD	B-Device
with	O
Live	O
View	O
mode	O
and	O
EOS	O
Integrated	O
Cleaning	O
System	O
.	O
</s>
<s>
It	O
was	O
discontinued	O
in	O
mid-2012	O
with	O
the	O
introduction	O
of	O
the	O
Canon	B-Algorithm
EOS-1D	I-Algorithm
X	I-Algorithm
,	O
which	O
replaced	O
both	O
the	O
EOS-1Ds	O
Mk	O
III	O
and	O
the	O
EOS-1D	B-Algorithm
Mk	I-Algorithm
IV	I-Algorithm
.	O
</s>
<s>
The	O
EOS-1Ds	B-Algorithm
Mark	I-Algorithm
III	I-Algorithm
features	O
a	O
21-megapixel	O
sensor	O
.	O
</s>
<s>
It	O
has	O
a	O
higher	O
pixel	O
count	O
than	O
the	O
16.7	O
megapixel	O
sensor	O
seen	O
in	O
the	O
Canon	B-Algorithm
EOS-1Ds	I-Algorithm
Mark	I-Algorithm
II	I-Algorithm
.	O
</s>
<s>
The	O
CMOS	B-Device
sensor	O
incorporates	O
a	O
new	O
pixel	O
design	O
with	O
on-chip	O
noise	O
reduction	O
circuitry	O
.	O
</s>
<s>
The	O
1Ds	B-Algorithm
Mark	I-Algorithm
III	I-Algorithm
also	O
features	O
Highlight	O
Tone	O
Priority	O
mode	O
,	O
which	O
boosts	O
the	O
dynamic	O
range	O
for	O
highlights	O
.	O
</s>
<s>
The	O
back	O
of	O
the	O
camera	O
has	O
a	O
,	O
230K	O
pixel	O
LCD	B-Device
monitor	O
,	O
larger	O
than	O
the	O
2.0	O
"	O
display	O
of	O
the	O
Mark	O
II	O
.	O
</s>
<s>
Live	O
View	O
is	O
a	O
mode	O
which	O
uses	O
this	O
LCD	B-Device
as	O
an	O
electronic	O
viewfinder	O
,	O
with	O
optional	O
grid	O
overlay	O
and	O
histogram	O
.	O
</s>
<s>
The	O
EOS-1Ds	B-Algorithm
Mark	I-Algorithm
III	I-Algorithm
connectivity	O
ports	O
:	O
</s>
<s>
The	O
camera	O
is	O
compatible	O
with	O
Canon	O
's	O
EF	B-Application
lenses	I-Application
and	O
EX	O
Speedlite	B-Algorithm
flashes	O
and	O
WFT-E2	O
wireless	O
file	O
transmitter	O
.	O
</s>
<s>
The	O
collection	O
of	O
software	O
packaged	O
with	O
the	O
EOS-1Ds	B-Algorithm
Mark	I-Algorithm
III	I-Algorithm
includes	O
:	O
</s>
<s>
Canon	O
has	O
rated	O
the	O
shutter	O
durability	O
of	O
the	O
Canon	B-Algorithm
EOS-1Ds	I-Algorithm
Mark	I-Algorithm
III	I-Algorithm
and	O
Canon	B-Algorithm
EOS-1D	I-Algorithm
Mark	I-Algorithm
III	I-Algorithm
at	O
300,000	O
cycles	O
,	O
significantly	O
more	O
than	O
other	O
EOS	B-Algorithm
cameras	I-Algorithm
.	O
</s>
<s>
The	O
1Ds	B-Algorithm
Mark	I-Algorithm
III	I-Algorithm
also	O
has	O
a	O
new	O
EOS	O
Integrated	O
Cleaning	O
System	O
that	O
removes	O
dust	O
automatically	O
.	O
</s>
