<s>
The	O
α850	O
(	O
DSLR-A850	B-Algorithm
)	O
was	O
Sony	O
's	O
second	O
full-frame	B-Algorithm
digital	I-Algorithm
SLR	I-Algorithm
,	O
introduced	O
on	O
27	O
August	O
2009	O
.	O
</s>
<s>
Similar	O
to	O
the	O
DSLR-A900	B-Algorithm
,	O
the	O
camera	O
featured	O
the	O
same	O
24.6-megapixel	O
full-frame	B-Algorithm
CMOS	B-Device
sensor	O
used	O
in	O
the	O
a900	B-Algorithm
.	O
</s>
<s>
The	O
camera	O
was	O
almost	O
exactly	O
the	O
same	O
as	O
the	O
DSLR-A900	B-Algorithm
,	O
but	O
the	O
viewfinder	O
coverage	O
was	O
dropped	O
to	O
98%	O
with	O
0.74	O
×	O
magnification	O
and	O
the	O
burst	O
rate	O
was	O
reduced	O
to	O
3	O
frames	O
per	O
second	O
.	O
</s>
