<s>
The	O
Panasonic	O
Lumix	O
7-14mm	O
4	O
lens	O
is	O
a	O
wide	O
to	O
ultra-wide	O
angle	O
zoom	O
lens	O
for	O
Micro	B-Operating_System
Four	I-Operating_System
Thirds	I-Operating_System
system	I-Operating_System
cameras	O
.	O
</s>
<s>
While	O
reviewers	O
praise	O
its	O
image	O
quality	O
and	O
constant	O
f/ratio	O
despite	O
a	O
small	O
size	O
,	O
it	O
is	O
considered	O
very	O
expensive	O
,	O
especially	O
after	O
the	O
introduction	O
of	O
the	O
competing	O
,	O
even	O
smaller	O
Olympus	O
Olympus	B-Device
M.Zuiko	I-Device
Digital	I-Device
ED	I-Device
9-18mm	I-Device
f/4	I-Device
-5.6	I-Device
lens	O
.	O
</s>
