<s>
The	O
EOS	B-Algorithm
400D	I-Algorithm
,	O
called	O
Digital	B-Algorithm
Rebel	I-Algorithm
XTi	I-Algorithm
in	O
North	O
America	O
and	O
EOS	B-Algorithm
Kiss	I-Algorithm
Digital	I-Algorithm
X	I-Algorithm
in	O
Japan	O
,	O
is	O
an	O
entry-level	O
digital	B-Device
single-lens	I-Device
reflex	I-Device
camera	I-Device
introduced	O
by	O
Canon	O
on	O
24	O
August	O
2006	O
.	O
</s>
<s>
It	O
is	O
the	O
successor	O
of	O
the	O
Canon	B-Algorithm
EOS	I-Algorithm
350D	I-Algorithm
,	O
and	O
upgrades	O
to	O
a	O
10.1	O
megapixel	O
CMOS	B-Architecture
sensor	I-Architecture
,	O
a	O
larger	O
continuous	O
shooting	O
buffer	O
,	O
an	O
integrated	O
image	B-Algorithm
sensor	I-Algorithm
vibrating	O
cleaning	O
system	O
(	O
first	O
used	O
in	O
a	O
Canon	B-Algorithm
EOS	I-Algorithm
DSLR	B-Device
)	O
,	O
a	O
more	O
precise	O
nine-point	O
autofocus	O
system	O
from	O
the	O
EOS	B-Device
30D	I-Device
,	O
improved	O
grip	O
,	O
and	O
a	O
bigger	O
LCD	B-Device
with	O
230,000	O
pixels	O
and	O
a	O
larger	O
viewing	O
angle	O
which	O
replaces	O
the	O
top	O
status	O
screen	O
.	O
</s>
<s>
The	O
400D	B-Algorithm
uses	O
the	O
DIGIC	O
II	O
image	O
processor	O
,	O
as	O
is	O
used	O
in	O
the	O
350D	B-Algorithm
.	O
</s>
<s>
The	O
400D	B-Algorithm
file	O
numbering	O
system	O
holds	O
9,999	O
pictures	O
,	O
as	O
opposed	O
to	O
100	O
photos	O
in	O
one	O
folder	O
with	O
the	O
350D	B-Algorithm
.	O
</s>
<s>
Support	O
for	O
the	O
Media	B-Protocol
Transfer	I-Protocol
Protocol	I-Protocol
(	O
MTP	O
)	O
USB	O
protocol	O
is	O
available	O
since	O
version	O
1.1.0	O
.	O
</s>
<s>
It	O
was	O
succeeded	O
by	O
the	O
Canon	B-Algorithm
EOS	I-Algorithm
450D	I-Algorithm
(	O
Rebel	B-Algorithm
XSi	I-Algorithm
in	O
North	O
America	O
)	O
which	O
was	O
announced	O
at	O
the	O
PMA	O
show	O
in	O
January	O
2008	O
with	O
sales	O
commencing	O
in	O
April	O
2008	O
.	O
</s>
<s>
400plus	O
is	O
a	O
firmware	O
add-on	O
which	O
offers	O
additional	O
functionality	O
for	O
Canon	B-Algorithm
400D	I-Algorithm
,	O
such	O
as	O
intervalometer	O
and	O
custom	O
autofocus	O
patterns	O
.	O
</s>
