<s>
The	O
Canon	B-Algorithm
T50	I-Algorithm
,	O
introduced	O
in	O
March	O
1983	O
and	O
discontinued	O
in	O
December	O
1989	O
,	O
was	O
the	O
first	O
in	O
Canon	O
's	O
new	O
T	B-Algorithm
series	I-Algorithm
of	O
35mm	O
single-lens	B-Algorithm
reflex	I-Algorithm
cameras	I-Algorithm
compatible	O
with	O
Canon	O
's	O
FD	B-Algorithm
lens	B-Algorithm
mount	I-Algorithm
.	O
</s>
<s>
SLR	B-Algorithm
sales	O
were	O
falling	O
in	O
1983	O
from	O
the	O
market	O
's	O
1981	O
peak	O
,	O
and	O
Canon	O
chose	O
to	O
try	O
greater	O
automation	O
to	O
revive	O
sales	O
and	O
remain	O
competitive	O
.	O
</s>
<s>
This	O
approach	O
had	O
found	O
favor	O
in	O
compact	O
cameras	O
such	O
as	O
the	O
AF35M	B-Algorithm
"	O
Autoboy	O
"	O
(	O
Japan	O
)	O
or	O
"	O
Sure	O
Shot	O
"	O
(	O
US	O
)	O
.	O
</s>
<s>
Unlike	O
those	O
compact	O
cameras	O
and	O
the	O
higher-end	O
models	O
in	O
the	O
T	B-Algorithm
series	I-Algorithm
,	O
the	O
T50	O
did	O
not	O
have	O
power	O
rewind	O
,	O
relying	O
on	O
a	O
manual	O
crank	O
.	O
</s>
<s>
The	O
camera	O
's	O
electric	O
systems	O
were	O
powered	O
by	O
two	O
AA	B-Algorithm
batteries	I-Algorithm
in	O
the	O
grip	O
,	O
which	O
gave	O
enough	O
power	O
to	O
shoot	O
75	O
24-exposure	O
rolls	O
,	O
or	O
50	O
36-exposure	O
rolls	O
.	O
</s>
<s>
Canon	O
's	O
previous	O
A	B-Algorithm
series	I-Algorithm
cameras	O
used	O
a	O
horizontally	O
travelling	O
cloth	O
shutter	O
,	O
while	O
the	O
T50	O
(	O
and	O
subsequent	O
T	B-Algorithm
series	I-Algorithm
models	O
)	O
used	O
a	O
vertically	O
travelling	O
metal	O
blade	O
shutter	O
which	O
allowed	O
for	O
faster	O
shutter	O
speeds	O
and	O
higher	O
flash	O
X-sync	O
speeds	O
.	O
</s>
<s>
A	O
couple	O
of	O
years	O
earlier	O
,	O
Konica	O
had	O
tried	O
a	O
similar	O
approach	O
with	O
their	O
FP-1	B-Algorithm
.	O
</s>
