<s>
The	O
Canon	B-Algorithm
T70	I-Algorithm
was	O
a	O
35mm	O
FD-mount	B-Algorithm
single-lens	B-Algorithm
reflex	I-Algorithm
camera	I-Algorithm
introduced	O
in	O
April	O
1984	O
as	O
the	O
second	O
in	O
Canon	O
's	O
T	B-Algorithm
series	I-Algorithm
.	O
</s>
<s>
The	O
T70	O
started	O
with	O
the	O
concepts	O
explored	O
in	O
1983	O
's	O
T50	B-Algorithm
,	O
took	O
them	O
further	O
,	O
and	O
applied	O
them	O
to	O
a	O
more	O
sophisticated	O
camera	O
.	O
</s>
<s>
While	O
the	O
Program	O
AE-only	O
T50	B-Algorithm
was	O
intended	O
as	O
a	O
beginner	O
's	O
camera	O
,	O
the	O
T70	O
gave	O
the	O
photographer	O
a	O
lot	O
more	O
control	O
over	O
the	O
camera	O
's	O
operation	O
while	O
keeping	O
the	O
T-series	O
philosophy	O
of	O
simplicity	O
in	O
control	O
and	O
operation	O
intact	O
.	O
</s>
<s>
All	O
powered	O
camera	O
functions	O
drew	O
on	O
two	O
AA	B-Algorithm
batteries	I-Algorithm
in	O
the	O
grip	O
.	O
</s>
<s>
The	O
T70	O
used	O
an	O
LCD	B-Device
mounted	O
on	O
the	O
top	O
of	O
the	O
right-hand	O
side	O
of	O
the	O
camera	O
as	O
a	O
major	O
component	O
of	O
its	O
user	O
interface	O
.	O
</s>
<s>
Two	O
buttons	O
above	O
the	O
display	O
labeled	O
'	O
UP	O
 '	O
and	O
'	O
DOWN	O
 '	O
adjusted	O
the	O
selected	O
parameter	O
and	O
the	O
results	O
were	O
shown	O
on	O
the	O
LCD	B-Device
.	O
</s>
<s>
Center-weighted	B-Algorithm
average	I-Algorithm
metering	I-Algorithm
was	O
the	O
standard	O
metering	O
method	O
,	O
averaging	O
over	O
the	O
whole	O
frame	O
with	O
a	O
slight	O
preference	O
towards	O
the	O
center	O
of	O
the	O
frame	O
,	O
where	O
the	O
main	O
subject	O
is	O
most	O
likely	O
to	O
be	O
.	O
</s>
<s>
The	O
metering	B-Algorithm
mode	I-Algorithm
was	O
selected	O
by	O
a	O
sliding	O
switch	O
on	O
the	O
top	O
left-hand	O
side	O
of	O
the	O
camera	O
(	O
from	O
the	O
photographer	O
's	O
perspective	O
)	O
.	O
</s>
<s>
Shutter-priority	B-Algorithm
AE	O
.	O
</s>
<s>
For	O
use	O
with	O
older	O
FL-mount	B-Algorithm
lenses	O
that	O
do	O
not	O
support	O
open-aperture	O
metering	O
.	O
</s>
<s>
When	O
it	O
was	O
introduced	O
,	O
the	O
Canon	B-Algorithm
T70	I-Algorithm
was	O
considered	O
technologically	O
advanced	O
compared	O
to	O
other	O
SLR	B-Algorithm
cameras	I-Algorithm
.	O
</s>
