<s>
The	O
Sony	O
α55	O
(	O
model	O
variants	O
SLT-A55V	O
with	O
GPS	O
,	O
SLT-A55	O
without	O
GPS	O
depending	O
on	O
country	O
)	O
is	O
a	O
midrange-level	O
SLT	B-Device
camera	O
,	O
released	O
in	O
August	O
2010	O
.	O
</s>
<s>
Its	O
design	O
is	O
novel	O
due	O
to	O
its	O
being	O
the	O
first	O
digital	B-Device
single-lens	I-Device
translucent	I-Device
camera	O
(	O
SLT	B-Device
)	O
,	O
along	O
with	O
the	O
Sony	B-Algorithm
α33	I-Algorithm
.	O
</s>
<s>
As	O
an	O
SLT	B-Device
it	O
employs	O
a	O
semi-transparent	O
mirror	O
instead	O
of	O
an	O
opaque	O
mirror	O
,	O
which	O
enables	O
phase	O
detection	O
autofocus	O
in	O
live	B-Device
view	I-Device
.	O
</s>
<s>
The	O
design	O
also	O
replaces	O
the	O
optical	O
viewfinder	O
present	O
in	O
conventional	O
DSLR	B-Device
with	O
a	O
high-resolution	O
electronic	B-Algorithm
viewfinder	I-Algorithm
.	O
</s>
<s>
The	O
static	O
mirror	O
also	O
eliminates	O
"	O
mirror	O
slap	O
"	O
,	O
the	O
noise	O
produced	O
by	O
the	O
movement	O
of	O
the	O
mirror	O
during	O
a	O
shutter	O
actuation	O
,	O
making	O
the	O
A55	O
quieter	O
than	O
standard	O
DSLRs	B-Device
.	O
</s>
<s>
The	O
A55	O
is	O
one	O
of	O
the	O
first	O
four	O
Sony	B-Algorithm
Alpha	I-Algorithm
DSLR	B-Device
/	O
SLT	B-Device
cameras	O
with	O
video	O
mode	O
included	O
,	O
capable	O
of	O
1080i	O
.	O
</s>
<s>
The	O
SLT	B-Device
design	O
means	O
that	O
it	O
is	O
capable	O
of	O
using	O
phase-detection	O
autofocus	O
during	O
video	O
recording	O
.	O
</s>
<s>
It	O
has	O
body-integrated	O
image	O
stabilization	O
,	O
and	O
a	O
16.2	O
MPx	O
APS-C	B-Algorithm
CMOS	B-Device
sensor	O
.	O
</s>
<s>
Model	O
name	O
Ambient	O
temperature	O
Image	O
Stabilization	O
On	O
Off	O
α55	O
(	O
SLT-A55V	O
)	O
9	O
min	O
Approx	O
.	O
</s>
<s>
29	O
minutes	O
6	O
min	O
13	O
minutes	O
3	O
min	O
5	O
minutes	O
α33	O
(	O
SLT-A33	B-Algorithm
)	O
11	O
min	O
Approx	O
.	O
</s>
