<s>
The	O
Minolta	B-Algorithm
SR-7	I-Algorithm
is	O
a	O
35	O
mm	O
single-lens	B-Algorithm
reflex	I-Algorithm
camera	I-Algorithm
(	O
SLR	B-Algorithm
)	O
made	O
by	O
Minolta	O
,	O
produced	O
from	O
1962	O
to	O
1966	O
.	O
</s>
<s>
It	O
is	O
notable	O
for	O
being	O
the	O
first	O
SLR	B-Algorithm
camera	I-Algorithm
with	O
a	O
built	O
in	O
CdS	O
light	O
meter	O
.	O
</s>
<s>
It	O
is	O
powered	O
by	O
a	O
single	O
PX625	B-Algorithm
battery	O
(	O
now	O
discontinued	O
,	O
Wein	O
Cell	O
625	O
batteries	O
are	O
an	O
alternative	O
)	O
.	O
</s>
<s>
In	O
1958	O
,	O
Minolta	O
's	O
first	O
SLR	B-Algorithm
camera	I-Algorithm
was	O
released	O
,	O
the	O
Minolta	B-Algorithm
SR-2	I-Algorithm
,	O
which	O
employed	O
a	O
semi-automatic	O
diaphragm	O
and	O
an	O
instant	O
return	O
mirror	O
.	O
</s>
<s>
Basically	O
a	O
stripped	O
down	O
Minolta	B-Algorithm
SR-2	I-Algorithm
with	O
shutter	O
speeds	O
reduced	O
to	O
1/500	O
of	O
a	O
second	O
rather	O
than	O
the	O
SR-2	O
'	O
s	O
1/1000	O
of	O
a	O
second	O
.	O
</s>
<s>
The	O
Minolta	B-Algorithm
SR-7	I-Algorithm
stayed	O
in	O
production	O
from	O
1962	O
to	O
1966	O
,	O
with	O
minor	O
changes	O
in	O
its	O
mechanism	O
and	O
overall	O
construction	O
.	O
</s>
