<s>
The	O
Canon	O
AC	O
lens-mount	O
was	O
a	O
proprietary	O
lens	O
mount	O
for	O
the	O
Canon	B-Algorithm
T80	I-Algorithm
.	O
</s>
<s>
The	O
lens	O
mount	O
was	O
a	O
variation	O
of	O
the	O
then-standard	O
Canon	B-Algorithm
FD	I-Algorithm
for	O
auto-focus	O
.	O
</s>
