<s>
The	O
Canon	B-Algorithm
AT-1	I-Algorithm
is	O
a	O
35mm	O
FD-mount	B-Algorithm
single-lens	B-Algorithm
reflex	I-Algorithm
camera	I-Algorithm
manufactured	O
by	O
Canon	O
of	O
Japan	O
from	O
December	O
1977	O
.	O
</s>
<s>
It	O
is	O
a	O
version	O
of	O
the	O
popular	O
AE-1	B-Algorithm
but	O
without	O
the	O
shutter-speed	O
priority	O
auto-exposure	O
mode	O
of	O
that	O
camera	O
.	O
</s>
<s>
A	O
light	O
meter	O
is	O
included	O
,	O
featuring	O
TTL	O
center-weighted	B-Algorithm
average	I-Algorithm
metering	I-Algorithm
with	O
a	O
CdS	O
photocell	O
,	O
and	O
a	O
match	O
needle	O
in	O
the	O
viewfinder	O
.	O
</s>
<s>
The	O
accessories	O
produced	O
for	O
the	O
AE-1	B-Algorithm
also	O
work	O
with	O
the	O
AT-1	O
,	O
including	O
motor	O
drives	O
.	O
</s>
