<s>
The	O
Canon	B-Algorithm
EOS	I-Algorithm
550D	I-Algorithm
is	O
an	O
18.0	O
megapixel	O
digital	B-Device
single-lens	I-Device
reflex	I-Device
camera	I-Device
,	O
announced	O
by	O
Canon	O
on	O
8	O
February	O
2010	O
.	O
</s>
<s>
It	O
is	O
known	O
as	O
the	O
EOS	B-Algorithm
Kiss	I-Algorithm
X4	I-Algorithm
in	O
Japan	O
,	O
and	O
as	O
the	O
EOS	B-Algorithm
Rebel	I-Algorithm
T2i	I-Algorithm
in	O
the	O
Americas	O
.	O
</s>
<s>
It	O
is	O
part	O
of	O
Canon	O
's	O
entry/mid	O
-level	O
digital	B-Device
SLR	I-Device
camera	I-Device
series	O
,	O
and	O
was	O
the	O
successor	O
model	O
to	O
the	O
EOS	B-Device
500D	I-Device
.	O
</s>
<s>
It	O
was	O
succeeded	O
by	O
the	O
EOS	B-Algorithm
600D	I-Algorithm
(	O
Kiss	O
X5/Rebel	O
T3i	O
)	O
,	O
but	O
remained	O
in	O
Canon	O
's	O
lineup	O
until	O
being	O
discontinued	O
in	O
June	O
2012	O
with	O
the	O
announcement	O
of	O
the	O
EOS	B-Algorithm
650D	I-Algorithm
(	O
Kiss	O
X6i/Rebel	O
T4i	O
)	O
.	O
</s>
<s>
The	O
550D	B-Algorithm
comes	O
with	O
following	O
image	O
processing	O
and	O
camera	O
operating	O
software	O
:	O
ZoomBrowser	O
EX	O
/	O
ImageBrowser	O
Image	O
Processing	O
,	O
Digital	B-Application
Photo	I-Application
Professional	I-Application
,	O
PhotoStitch	O
,	O
EOS	O
Utility	O
and	O
Picture	O
Style	O
Editor	O
.	O
</s>
<s>
The	O
Canon	B-Algorithm
550D	I-Algorithm
has	O
available	O
accessories	O
such	O
as	O
:	O
</s>
<s>
Magic	B-Device
Lantern	I-Device
is	O
an	O
open	O
source	O
(	O
GPL	O
)	O
firmware	O
add-on	O
for	O
Canon	O
DSLR	B-Device
cameras	I-Device
,	O
which	O
has	O
enhancements	O
for	O
video	O
and	O
still	O
photography	O
without	O
replacing	O
the	O
stock	O
firmware	O
.	O
</s>
<s>
The	O
Canon	B-Algorithm
T2i	I-Algorithm
is	O
compatible	O
with	O
Magic	B-Device
Lantern	I-Device
firmware	O
.	O
</s>
<s>
The	O
British	O
Journal	O
of	O
Photography	O
was	O
impressed	O
by	O
the	O
550D	B-Algorithm
and	O
said	O
"	O
the	O
EOS	B-Algorithm
550D	I-Algorithm
is	O
a	O
good	O
match	O
for	O
the	O
7D	O
at	O
half	O
the	O
price	O
"	O
.	O
</s>
<s>
For	O
most	O
of	O
its	O
product	O
life	O
,	O
alternative	O
cameras	O
included	O
the	O
Nikon	B-Algorithm
D5000	I-Algorithm
,	O
Nikon	B-Algorithm
D3100	I-Algorithm
,	O
Canon	B-Device
500D	I-Device
,	O
Nikon	B-Algorithm
D90	I-Algorithm
,	O
and	O
Pentax	B-Algorithm
K-7	I-Algorithm
.	O
</s>
<s>
Immediately	O
before	O
it	O
was	O
discontinued	O
in	O
2012	O
,	O
the	O
main	O
competitors	O
of	O
the	O
550D	B-Algorithm
were	O
the	O
Nikon	B-Algorithm
D3200	I-Algorithm
and	O
D5100	B-Algorithm
(	O
respectively	O
the	O
replacements	O
for	O
the	O
D3100	B-Algorithm
and	O
D5000	B-Algorithm
)	O
,	O
Pentax	B-Algorithm
K-r	I-Algorithm
(	O
replacement	O
for	O
the	O
K-x	B-Device
)	O
,	O
and	O
the	O
Sony	B-Algorithm
Alpha	I-Algorithm
57	I-Algorithm
,	O
one	O
of	O
the	O
company	O
's	O
SLT	B-Device
cameras	I-Device
.	O
</s>
<s>
(	O
The	O
replacement	O
for	O
the	O
Nikon	B-Algorithm
D90	I-Algorithm
,	O
the	O
D7000	B-Algorithm
,	O
is	O
positioned	O
upmarket	O
from	O
the	O
550D	B-Algorithm
.	O
)	O
</s>
