<s>
The	O
EF40mm	O
f/2.8	O
STM	O
was	O
a	O
standard	O
prime	O
lens	O
which	O
was	O
introduced	O
by	O
Canon	O
in	O
June	O
2012	O
,	O
alongside	O
the	O
EOS	B-Algorithm
650D/Kiss	I-Algorithm
X6i/Rebel	I-Algorithm
T4i	I-Algorithm
.	O
</s>
<s>
It	O
was	O
Canon	O
's	O
first	O
EF	B-Application
pancake	O
lens	O
.	O
</s>
<s>
The	O
EF	B-Application
40mm	O
was	O
the	O
first	O
EF	B-Application
lens	I-Application
equipped	O
with	O
a	O
stepping	O
motor	O
(	O
STM	O
)	O
.	O
</s>
