<s>
The	O
S-mount	B-Algorithm
is	O
a	O
standard	O
lens	O
mount	O
used	O
in	O
various	O
surveillance	O
CCTV	O
cameras	O
and	O
webcams	B-Protocol
.	O
</s>
<s>
S-mount	B-Algorithm
lenses	O
are	O
often	O
called	O
"	O
M12	O
lenses	O
"	O
.	O
</s>
<s>
S-mount	B-Algorithm
lenses	O
do	O
not	O
have	O
a	O
flange	O
and	O
therefore	O
there	O
is	O
no	O
fixed	O
lens	O
to	O
sensor	O
distance	O
and	O
they	O
must	O
be	O
adjusted	O
to	O
focus	O
.	O
</s>
<s>
Due	O
to	O
the	O
small	O
size	O
of	O
the	O
lens	O
barrel	O
,	O
performance	O
is	O
somewhat	O
limited	O
compared	O
to	O
larger	O
lenses	O
and	O
most	O
S-mount	B-Algorithm
lenses	O
are	O
relatively	O
slow	O
(	O
1.6	O
and	O
slower	O
)	O
.	O
</s>
