<s>
The	O
Konica	B-Algorithm
Domirex	I-Algorithm
was	O
a	O
prototype	O
camera	O
from	O
1963	O
.	O
</s>
<s>
It	O
was	O
a	O
35mm	O
SLR	B-Algorithm
,	O
using	O
an	O
unusual	O
mirror	O
arrangement	O
to	O
eliminate	O
the	O
need	O
for	O
the	O
mirror	O
to	O
flip	O
up	O
out	O
of	O
the	O
way	O
prior	O
to	O
exposure	O
.	O
</s>
<s>
It	O
's	O
still	O
an	O
"	O
SLR	B-Algorithm
"	O
,	O
although	O
it	O
looks	O
more	O
like	O
a	O
rangefinder	B-Algorithm
or	O
viewfinder	O
camera	O
,	O
b	O
.	O
</s>
<s>
The	O
reason	O
is	O
that	O
a	O
"	O
single	B-Algorithm
lens	I-Algorithm
reflex	I-Algorithm
"	O
camera	O
,	O
by	O
definition	O
,	O
uses	O
a	O
mirror	O
to	O
reflect	O
light	O
that	O
's	O
passed	O
through	O
the	O
single	B-Algorithm
lens	I-Algorithm
into	O
the	O
viewfinder	O
.	O
</s>
<s>
The	O
Domirex	O
uses	O
a	O
number	O
of	O
small	O
mirrors	O
to	O
redirect	O
the	O
image	O
to	O
the	O
viewfinder	O
,	O
rather	O
than	O
a	O
single	O
large	O
mirror	O
along	O
with	O
the	O
bulging	O
pentaprism	O
typical	O
of	O
35mm	O
SLR	B-Algorithm
cameras	I-Algorithm
.	O
</s>
