<s>
Sigma	B-Algorithm
60mm	I-Algorithm
F2.8	I-Algorithm
DN	I-Algorithm
Art	I-Algorithm
lens	O
is	O
a	O
standard	O
prime	O
lens	O
for	O
Sony	B-Algorithm
E	I-Algorithm
and	O
Micro	B-Operating_System
Four-Thirds	I-Operating_System
mounts	O
,	O
announced	O
by	O
Sigma	O
on	O
January	O
29	O
,	O
2013	O
.	O
</s>
