<s>
The	O
Pentax	B-Application
smc	O
DA*	O
16-50mm	O
F2.8	O
ED	O
AL	O
(	O
IF	O
)	O
SDM	O
is	O
an	O
advanced	O
standard	O
zoom	O
lens	O
for	O
Pentax	B-Algorithm
K-mount	I-Algorithm
APS-C	B-Algorithm
DSLR	B-Device
bodies	O
,	O
announced	O
by	O
Pentax	B-Application
on	O
February	O
21	O
,	O
2007	O
.	O
</s>
<s>
The	O
Pentax	B-Application
smc	O
DA*	O
16-50mm	O
F2.8	O
ED	O
AL	O
(	O
IF	O
)	O
SDM	O
is	O
an	O
professional	O
standard	O
zoom	O
lens	O
for	O
Pentax	B-Algorithm
K-mount	I-Algorithm
APS-C	B-Algorithm
DSLR	B-Device
bodies	O
.	O
</s>
<s>
Attribute	O
smc	O
ED	O
AL	O
 [ IF ] 	O
SDM	O
HD	O
ED	O
PLM	O
AW	O
Image	O
150px	O
Key	O
features	O
Full-frame	B-Algorithm
compatible	I-Algorithm
15px|Yes|link	O
=	O
No	O
★	O
-series	O
15px|Yes|link	O
=	O
Yes	O
Macro	O
15px|No|link	O
=	O
No	O
Manual	O
focus	O
override	O
15px|Yes|link	O
=	O
Yes	O
Weather-sealing	O
15px|Yes|link	O
=	O
Yes	O
Lens-based	O
stabilization	O
15px|No|link	O
=	O
No	O
Aperture	B-General_Concept
ring	O
15px|No|link	O
=	O
NoTechnical	O
data	O
Aperture	B-General_Concept
(	O
max-min	O
)	O
2.8	O
–	O
32	O
Construction	O
15	O
groups	O
/	O
12	O
elements	O
16	O
groups	O
/	O
10	O
elements	O
#	O
of	O
diaphragm	O
blades	O
9	O
9	O
(	O
rounded	O
)	O
Closest	O
focusing	O
distance	O
Max	O
.	O
</s>
