<s>
The	O
Canon	B-Algorithm
EOS-1D	I-Algorithm
is	O
a	O
professional	O
digital	B-Device
single-lens	I-Device
reflex	I-Device
camera	I-Device
launched	O
in	O
November	O
2001	O
as	O
part	O
of	O
Canon	O
's	O
flagship	O
EOS-1	O
series	O
.	O
</s>
<s>
It	O
was	O
the	O
first	O
digital	O
camera	O
in	O
the	O
EOS-1	O
line	O
,	O
succeeding	O
Canon	O
's	O
final	O
flagship	O
film	O
camera	O
,	O
the	O
1V	B-Algorithm
.	O
</s>
<s>
It	O
was	O
also	O
the	O
first	O
professional-level	O
digital	O
camera	O
developed	O
and	O
released	O
entirely	O
by	O
Canon	O
,	O
the	O
previous	O
D2000	B-Algorithm
being	O
a	O
collaborative	O
effort	O
with	O
Kodak	O
.	O
</s>
<s>
It	O
has	O
a	O
1.3x	O
crop	O
factor	O
with	O
a	O
image	B-Algorithm
sensor	I-Algorithm
sourced	O
.	O
</s>
<s>
The	O
camera	O
shares	O
its	O
body	O
design	O
with	O
the	O
Canon	B-Algorithm
EOS-1V	I-Algorithm
35mm	O
camera	O
(	O
with	O
the	O
additional	O
battery	O
grip	O
attached	O
)	O
.	O
</s>
<s>
It	O
was	O
complemented	O
by	O
the	O
slower	O
,	O
higher-resolution	O
1Ds	B-Algorithm
in	O
2002	O
and	O
succeeded	O
by	O
the	O
1D	B-Device
Mark	I-Device
II	I-Device
in	O
April	O
2004	O
.	O
</s>
<s>
The	O
1D	O
was	O
seen	O
as	O
a	O
major	O
breakthrough	O
for	O
a	O
professional	O
news	O
and	O
sports	O
camera	O
after	O
its	O
predecessors	O
,	O
the	O
Canon	B-Device
EOS	I-Device
DCS	I-Device
series	I-Device
and	O
EOS	B-Algorithm
D2000	I-Algorithm
,	O
which	O
had	O
both	O
been	O
produced	O
in	O
co-operation	O
with	O
Kodak	O
.	O
</s>
<s>
Features	O
a	O
CCD	B-Algorithm
sensor	I-Algorithm
instead	O
of	O
a	O
CMOS	B-Device
sensor	B-Algorithm
.	O
</s>
<s>
The	O
only	O
Canon	O
SLR	B-Algorithm
(	O
film	O
or	O
digital	O
)	O
to	O
have	O
an	O
X-sync	O
speed	O
of	O
up	O
to	O
1/500	O
of	O
a	O
second	O
.	O
</s>
<s>
The	O
only	O
Canon	O
SLR	B-Algorithm
(	O
film	O
or	O
digital	O
)	O
to	O
have	O
a	O
shutter	O
speed	O
of	O
up	O
to	O
1/16000	O
of	O
a	O
second	O
.	O
</s>
<s>
The	O
only	O
PC	O
connectivity	O
was	O
provided	O
via	O
an	O
IEEE	B-Protocol
1394	I-Protocol
(	O
FireWire	B-Protocol
)	O
connection	O
,	O
as	O
USB	O
was	O
still	O
only	O
on	O
version	O
1.1	O
,	O
which	O
was	O
far	O
too	O
slow	O
for	O
transferring	O
large	O
amounts	O
of	O
high-resolution	O
image	O
files	O
.	O
</s>
<s>
This	O
feature	O
had	O
been	O
present	O
in	O
the	O
earlier	O
DCS	O
and	O
D2000	B-Algorithm
,	O
and	O
was	O
retained	O
on	O
later	O
models	O
.	O
</s>
<s>
It	O
was	O
added	O
to	O
the	O
5D	O
line	O
on	O
the	O
5D	B-Algorithm
Mark	I-Algorithm
II	I-Algorithm
,	O
though	O
this	O
was	O
mainly	O
intended	O
to	O
be	O
used	O
with	O
the	O
camera	O
's	O
video	O
recording	O
mode	O
.	O
</s>
<s>
In	O
addition	O
the	O
camera	O
used	O
an	O
externally	O
mounted	O
white	O
balance	O
sensor	B-Algorithm
,	O
another	O
feature	O
which	O
had	O
earlier	O
appeared	O
on	O
the	O
D2000	B-Algorithm
.	O
</s>
<s>
The	O
1D	O
is	O
the	O
first	O
Canon	O
DSLR	B-Device
to	O
store	O
9,999	O
images	O
to	O
one	O
folder	O
-	O
a	O
feature	O
that	O
eventually	O
became	O
the	O
standard	O
for	O
subsequent	O
Canon	O
products	O
(	O
from	O
its	O
compact	O
point	O
and	O
shoots	O
to	O
its	O
DSLR	B-Device
cameras	I-Device
)	O
.	O
</s>
