<s>
The	O
fill	B-Algorithm
factor	I-Algorithm
of	O
an	O
image	B-Algorithm
sensor	I-Algorithm
array	O
is	O
the	O
ratio	O
of	O
a	O
pixel	O
's	O
light	O
sensitive	O
area	O
to	O
its	O
total	O
area	O
.	O
</s>
<s>
For	O
pixels	O
without	O
microlenses	O
,	O
the	O
fill	B-Algorithm
factor	I-Algorithm
is	O
the	O
ratio	O
of	O
photodiode	O
area	O
to	O
total	O
pixel	O
area	O
,	O
</s>
<s>
but	O
the	O
use	O
of	O
microlenses	O
increases	O
the	O
effective	O
fill	B-Algorithm
factor	I-Algorithm
,	O
often	O
to	O
nearly	O
100%	O
,	O
by	O
converging	O
light	O
from	O
the	O
whole	O
pixel	O
area	O
into	O
the	O
photodiode	O
.	O
</s>
<s>
Another	O
case	O
that	O
reduces	O
the	O
fill	B-Algorithm
factor	I-Algorithm
of	O
an	O
image	O
is	O
to	O
add	O
additional	O
memory	O
beside	O
each	O
pixel	O
,	O
so	O
as	O
to	O
achieve	O
a	O
global	O
shutter	O
on	O
CMOS	O
sensors	O
.	O
</s>
