<s>
The	O
Olympus	O
Corporation	O
M.Zuiko	O
Digital	O
ED	O
9	O
–	O
18mm	O
f/4	O
-5.6	O
is	O
a	O
Micro	B-Operating_System
Four	I-Operating_System
Thirds	I-Operating_System
System	I-Operating_System
lens	O
.	O
</s>
<s>
In	O
the	O
Micro	B-Operating_System
Four	I-Operating_System
Thirds	I-Operating_System
format	B-Algorithm
,	O
it	O
is	O
a	O
zoom	O
ranging	O
from	O
wide	O
to	O
ultra-wide	O
.	O
</s>
<s>
Like	O
many	O
other	O
Olympus	O
Micro	B-Operating_System
Four	I-Operating_System
Thirds	I-Operating_System
zooms	O
,	O
the	O
front	O
lens	O
elements	O
extend	O
for	O
use	O
,	O
and	O
retract	O
for	O
storage	O
.	O
</s>
<s>
Reviewers	O
found	O
sharpness	O
to	O
be	O
competitive	O
with	O
the	O
alternative	O
Panasonic	B-Device
7-14mm	I-Device
,	O
despite	O
a	O
noticeably	O
smaller	O
collapsed	O
size	O
,	O
lack	O
of	O
vignetting	O
,	O
and	O
much	O
lower	O
price	O
.	O
</s>
