<s>
The	O
Olympus	B-Algorithm
PEN	I-Algorithm
E-PM1	I-Algorithm
is	O
an	O
entry-level	O
mirrorless	B-Device
interchangeable-lens	I-Device
camera	I-Device
from	O
Japanese	O
manufacturer	O
Olympus	O
with	O
a	O
Micro	B-Operating_System
Four	I-Operating_System
Thirds	I-Operating_System
lens	O
mount	O
and	O
sensor	O
.	O
</s>
<s>
The	O
E-PM1	B-Algorithm
was	O
announced	O
on	O
June	O
30	O
,	O
2011	O
together	O
with	O
two	O
other	O
Olympus	O
Micro	B-Operating_System
Four	I-Operating_System
Thirds	I-Operating_System
cameras	O
,	O
EP3	O
and	O
E-PL3	O
.	O
</s>
<s>
What	O
Digital	O
Camera	O
called	O
it	O
"	O
an	O
easy	O
to	O
use	O
camera	O
"	O
while	O
criticising	O
the	O
auto	B-Algorithm
white	I-Algorithm
balance	I-Algorithm
accuracy	O
,	O
weak	O
performance	O
in	O
low	O
light	O
,	O
and	O
lack	O
of	O
physical	O
grip	O
on	O
the	O
camera	O
body	O
.	O
</s>
