<s>
The	O
Canon	B-Algorithm
AE-1	I-Algorithm
is	O
a	O
35mm	O
single-lens	B-Algorithm
reflex	I-Algorithm
(	O
SLR	B-Algorithm
)	O
film	O
camera	O
for	O
use	O
with	O
interchangeable	O
lenses	O
.	O
</s>
<s>
The	O
AE-1	O
is	O
a	O
historically	O
significant	O
SLR	B-Algorithm
,	O
both	O
because	O
it	O
was	O
the	O
first	O
microprocessor-equipped	O
SLR	B-Algorithm
and	O
because	O
of	O
its	O
sales	O
:	O
backed	O
by	O
a	O
major	O
advertising	O
campaign	O
,	O
the	O
AE-1	O
sold	O
over	O
5.7	O
million	O
units	O
,	O
which	O
made	O
it	O
an	O
unprecedented	O
success	O
in	O
the	O
SLR	B-Algorithm
market	O
.	O
</s>
<s>
The	O
AE-1	O
has	O
a	O
Canon	B-Algorithm
FD	I-Algorithm
breech-lock	O
lens	B-Algorithm
mount	I-Algorithm
and	O
accepts	O
any	O
FD	O
or	O
New	O
FD	O
(	O
FDn	O
)	O
lens	O
.	O
</s>
<s>
It	O
is	O
not	O
compatible	O
with	O
Canon	O
's	O
later	O
Canon	B-Application
EF	I-Application
lens	I-Application
mount	I-Application
,	O
though	O
adapters	O
made	O
by	O
independent	O
manufacturers	O
can	O
be	O
found	O
.	O
</s>
<s>
The	O
camera	O
will	O
also	O
accept	O
Canon	O
's	O
earlier	O
FL-mount	B-Algorithm
lenses	O
through	O
the	O
use	O
of	O
stop-down	O
metering	O
.	O
</s>
<s>
During	O
the	O
late	O
1970s	O
,	O
there	O
were	O
over	O
50	O
Canon	B-Algorithm
FD	I-Algorithm
lenses	O
available	O
for	O
purchase	O
.	O
</s>
<s>
The	O
AE-1	O
is	O
a	O
battery-powered	O
(	O
one	O
4LR44	O
or	O
4SR44	O
)	O
microprocessor-controlled	O
manual	O
focus	O
SLR	B-Algorithm
.	O
</s>
<s>
It	O
supports	O
either	O
manual	O
exposure	O
control	O
or	O
shutter	B-Algorithm
priority	I-Algorithm
auto	O
exposure	O
.	O
</s>
<s>
The	O
viewfinder	O
used	O
by	O
the	O
AE-1	O
is	O
Canon	O
's	O
standard	O
split	O
image	O
rangefinder	B-Algorithm
with	O
microprism	O
collar	O
focusing	O
aids	O
.	O
</s>
<s>
The	O
AE-1	O
was	O
the	O
first	O
in	O
what	O
became	O
a	O
complete	O
overhaul	O
of	O
Canon	O
's	O
line	O
of	O
SLRs	B-Algorithm
.	O
</s>
<s>
The	O
1970s	O
and	O
1980s	O
were	O
an	O
era	O
of	O
intense	O
competition	O
between	O
the	O
major	O
Japanese	O
SLR	B-Algorithm
brands	O
:	O
Canon	O
,	O
Nikon	B-Algorithm
,	O
Minolta	O
,	O
Pentax	B-Application
and	O
Olympus	O
.	O
</s>
<s>
Although	O
Canon	O
had	O
been	O
making	O
quality	O
35	O
mm	O
cameras	O
for	O
decades	O
,	O
it	O
had	O
since	O
the	O
late	O
1950s	O
been	O
overshadowed	O
by	O
rival	O
Nippon	O
Kokagu	O
K	O
.	O
K	O
.	O
and	O
its	O
Nikon	B-Algorithm
cameras	O
.	O
</s>
<s>
While	O
Canon	O
easily	O
led	O
in	O
the	O
amateur	O
compact	O
fixed-lens	O
market	O
(	O
where	O
Nikon	B-Algorithm
did	O
not	O
compete	O
)	O
,	O
Canon	O
SLRs	B-Algorithm
did	O
not	O
have	O
the	O
professional	O
features	O
of	O
the	O
top-end	O
Nikon	B-Algorithm
SLRs	B-Algorithm
.	O
</s>
<s>
Nikon	B-Algorithm
,	O
with	O
its	O
solid	O
reputation	O
for	O
quality	O
of	O
material	O
and	O
workmanship	O
,	O
held	O
a	O
stranglehold	O
on	O
the	O
prestigious	O
professional	O
SLR	B-Algorithm
market	O
that	O
competitors	O
could	O
not	O
break	O
.	O
</s>
<s>
The	O
AE-1	O
was	O
the	O
vanguard	O
of	O
the	O
landmark	O
Canon	O
amateur	O
level	O
A-series	O
SLRs	B-Algorithm
and	O
led	O
Canon	O
's	O
foray	O
into	O
the	O
emerging	O
electronically	O
controlled	O
SLR	B-Algorithm
market	O
.	O
</s>
<s>
The	O
other	O
members	O
of	O
the	O
A-series	O
were	O
the	O
AT-1	B-Algorithm
(	O
released	O
1977	O
)	O
,	O
A-1	B-Algorithm
(	O
1978	O
)	O
,	O
AV-1	B-Algorithm
(	O
1979	O
)	O
,	O
AE-1	B-Algorithm
Program	I-Algorithm
(	O
1981	O
)	O
and	O
AL-1	B-Algorithm
(	O
1982	O
)	O
.	O
</s>
<s>
By	O
sharing	O
most	O
major	O
components	O
,	O
including	O
an	O
inexpensive	O
horizontal	O
cloth-curtain	O
shutter	O
,	O
viewfinder	O
information	O
display	O
,	O
and	O
autoflash	O
control	O
,	O
Canon	O
further	O
reduced	O
costs	O
and	O
could	O
undercut	O
the	O
price	O
of	O
the	O
more	O
expensive	O
SLRs	B-Algorithm
then	O
on	O
the	O
market	O
.	O
</s>
<s>
The	O
AE-1	O
was	O
the	O
first	O
SLR	B-Algorithm
purchased	O
by	O
millions	O
of	O
amateur	O
photographers	O
,	O
persuaded	O
by	O
its	O
feature	O
list	O
and	O
low	O
price	O
.	O
</s>
<s>
The	O
first	O
generation	O
electronically	O
controlled	O
35mm	O
SLR	B-Algorithm
Canon	B-Application
EF	I-Application
(	O
1973	O
)	O
merged	O
with	O
the	O
final	O
generation	O
rangefinder	B-Algorithm
Canonet	B-Algorithm
G-III	I-Algorithm
QL17	I-Algorithm
(	O
1972	O
)	O
.	O
</s>
<s>
After	O
decades	O
of	O
chasing	O
Nikon	B-Algorithm
for	O
Japanese	O
optical	O
supremacy	O
,	O
Canon	O
finally	O
hit	O
upon	O
a	O
formula	O
for	O
success	O
:	O
high	O
technology	O
for	O
ease	O
of	O
use	O
,	O
cheaper	O
internal	O
parts	O
and	O
electronics	O
for	O
lower	O
price	O
,	O
and	O
heavy	O
advertising	O
to	O
get	O
the	O
message	O
out	O
.	O
</s>
<s>
The	O
shutter-priority	B-Algorithm
system	O
of	O
the	O
AE-1	O
was	O
more	O
suited	O
to	O
sports	O
action	O
than	O
to	O
preserving	O
depth-of-field	O
,	O
yet	O
the	O
1/1000	O
s	O
top	O
speed	O
of	O
its	O
horizontally	O
traveling	O
shutter	O
limited	O
its	O
use	O
for	O
such	O
activities	O
.	O
</s>
<s>
Canon	O
's	O
eventual	O
abandonment	O
of	O
the	O
FD	O
lens	B-Algorithm
mount	I-Algorithm
for	O
the	O
EOS	O
autofocus	O
design	O
also	O
had	O
an	O
effect	O
on	O
prices	O
for	O
the	O
AE-1	O
on	O
the	O
used	O
market	O
.	O
</s>
<s>
Apple	O
sound	O
designer	O
Jim	O
Reekes	O
recorded	O
the	O
screen	O
snapshot	O
sound	O
used	O
on	O
Macintosh	B-Device
computers	I-Device
and	O
iPhones	B-Device
from	O
the	O
AE-1	O
he	O
used	O
as	O
a	O
high	O
school	O
student	O
.	O
</s>
