<s>
The	O
lens	O
is	O
produced	O
in	O
Canon	B-Application
EF	I-Application
mount	I-Application
,	O
Nikon	B-Architecture
F-mount	I-Architecture
,	O
Pentax	B-Algorithm
K	I-Algorithm
mount	I-Algorithm
,	O
Sigma	O
's	O
own	O
SA	B-Algorithm
mount	I-Algorithm
,	O
and	O
the	O
Sony/Minolta	B-Application
AF	I-Application
Mount	I-Application
varieties	O
,	O
all	O
have	O
the	O
same	O
optical	O
formula	O
.	O
</s>
<s>
Since	O
the	O
lens	O
covers	O
full-frame	B-Algorithm
sensors	I-Algorithm
and	O
includes	O
an	O
ultrasonic	O
autofocus	O
motor	O
,	O
it	O
is	O
fully	O
compatible	O
with	O
most	O
DSLRs	O
on	O
which	O
it	O
can	O
be	O
mounted	O
physically	O
.	O
</s>
