<s>
The	O
Sony	O
α9	O
(	O
the	O
α	O
is	O
sometimes	O
spelled	O
out	O
as	O
Alpha	O
)	O
,	O
Model	O
ILCE-9	O
,	O
is	O
a	O
full-frame	B-Device
mirrorless	I-Device
interchangeable-lens	I-Device
camera	I-Device
.	O
</s>
<s>
The	O
camera	O
is	O
not	O
the	O
successor	O
to	O
the	O
α7	O
line	O
of	O
digital	B-Device
cameras	I-Device
but	O
supplements	O
it	O
.	O
</s>
<s>
Announced	O
on	O
19	O
April	O
2017	O
,	O
the	O
α9	O
is	O
characterized	O
by	O
Sony	O
as	O
a	O
true	O
professional	O
mirrorless	B-Device
camera	I-Device
system	O
.	O
</s>
<s>
The	O
α9	O
is	O
being	O
compared	O
with	O
the	O
Nikon	B-Algorithm
D5	I-Algorithm
and	O
the	O
Canon	B-Algorithm
EOS-1D	I-Algorithm
X	I-Algorithm
Mark	I-Algorithm
II	I-Algorithm
.	O
</s>
<s>
This	O
is	O
accomplished	O
without	O
temporarily	O
blacking	O
out	O
the	O
finder	O
for	O
each	O
exposure	O
,	O
unlike	O
a	O
DSLR	B-Device
.	O
</s>
<s>
Additionally	O
,	O
the	O
α9	O
II	O
breaks	O
compatibility	O
with	O
the	O
Memory	O
Stick	O
format	O
;	O
both	O
slots	O
are	O
now	O
SD	B-Device
and	O
support	O
the	O
UHS-II	O
protocol	O
.	O
</s>
