<s>
Omega	B-Algorithm
is	O
the	O
brand	O
name	O
of	O
several	O
medium-format	O
cameras	O
that	O
were	O
initially	O
developed	O
and	O
sold	O
by	O
Simmon	O
Brothers	O
starting	O
from	O
1954	O
,	O
then	O
licensed	O
to	O
and	O
manufactured	O
by	O
Konica	O
and	O
then	O
Mamiya	O
from	O
1964	O
until	O
1981	O
,	O
when	O
the	O
line	O
was	O
discontinued	O
.	O
</s>
<s>
Simmon	O
Brothers	O
originally	O
had	O
used	O
the	O
Omega	B-Algorithm
brand	O
for	O
a	O
line	O
of	O
enlargers	O
,	O
introduced	O
in	O
1939	O
and	O
discontinued	O
in	O
2014	O
.	O
</s>
<s>
Omega	B-Algorithm
became	O
an	O
independent	O
brand	O
for	O
the	O
enlargers	O
after	O
Simmon	O
Brothers	O
were	O
folded	O
into	O
the	O
Berkey	O
Photo	O
conglomerate	O
in	O
1961	O
.	O
</s>
<s>
Omega	B-Algorithm
enlargers	O
can	O
be	O
recognized	O
by	O
their	O
distinctive	O
,	O
slanted	O
enlarger	O
head	O
support	O
.	O
</s>
<s>
Under	O
Berkey	O
,	O
Omega	B-Algorithm
also	O
marketed	O
a	O
line	O
of	O
view	B-Algorithm
cameras	I-Algorithm
,	O
the	O
Omega	B-Algorithm
View	O
45	O
,	O
which	O
were	O
built	O
by	O
Sakai	O
Special	O
Mfg	O
.	O
</s>
<s>
The	O
Simmon	O
Brothers	O
,	O
better	O
known	O
at	O
the	O
time	O
for	O
their	O
line	O
of	O
enlargers	O
,	O
built	O
the	O
original	O
Simmon	B-Algorithm
Omega	I-Algorithm
cameras	O
in	O
the	O
United	O
States	O
starting	O
from	O
1954	O
.	O
</s>
<s>
The	O
Omega	B-Algorithm
120	O
camera	O
was	O
equipped	O
with	O
a	O
fixed	O
Omicron	O
90mm	O
lens	O
designed	O
by	O
Wollensak	O
with	O
four	O
elements	O
;	O
it	O
was	O
designed	O
to	O
facilitate	O
rapid	O
operation	O
as	O
a	O
press	B-Algorithm
camera	I-Algorithm
,	O
using	O
a	O
large	O
focusing	O
knob	O
and	O
combined	O
push/pull	O
film	O
transport	O
lever	O
that	O
also	O
served	O
to	O
cock	O
the	O
leaf	O
shutter	O
for	O
the	O
right	O
hand	O
and	O
a	O
shutter	O
release	O
for	O
the	O
left	O
hand	O
.	O
</s>
<s>
Shortly	O
thereafter	O
,	O
the	O
design	O
was	O
licensed	O
to	O
Konica	O
,	O
another	O
company	O
marketed	O
in	O
the	O
United	O
States	O
by	O
Berkey	O
,	O
and	O
manufactured	O
in	O
modified	O
form	O
as	O
the	O
Koni-Omega	O
line	O
between	O
1964	O
and	O
1975	O
,	O
which	O
included	O
the	O
Koni-Omega	O
Rapid	O
(	O
introduced	O
in	O
1964	O
and	O
sold	O
in	O
Japan	O
as	O
the	O
Konica	O
Press	O
)	O
and	O
Rapid	O
M	O
(	O
1968	O
)	O
.	O
</s>
<s>
The	O
last	O
models	O
,	O
branded	O
as	O
Rapid	O
Omega	B-Algorithm
and	O
bearing	O
an	O
all-black	O
finish	O
,	O
were	O
produced	O
by	O
Mamiya	O
in	O
the	O
same	O
factory	O
,	O
including	O
the	O
Rapid	O
Omega	B-Algorithm
100	O
and	O
200	O
(	O
both	O
introduced	O
in	O
1975	O
)	O
,	O
which	O
were	O
similar	O
to	O
the	O
Rapid	O
and	O
Rapid	O
M	O
,	O
respectively	O
.	O
</s>
<s>
This	O
line	O
shared	O
the	O
same	O
interchangeable	O
lenses	O
with	O
the	O
preceding	O
Koni-Omega	O
line	O
,	O
although	O
they	O
were	O
rebranded	O
as	O
Super	O
Omegon	O
rather	O
than	O
Hexanon	O
.	O
</s>
<s>
+	O
Koni/Rapid	O
Omega	B-Algorithm
lenses	O
Focal	B-Algorithm
length	I-Algorithm
Aperture	B-General_Concept
Construction	O
Min	O
.	O
</s>
<s>
Konica	O
extended	O
its	O
market	O
with	O
another	O
line	O
,	O
the	O
Koni-Omegaflex	O
M	O
in	O
1968	O
,	O
which	O
was	O
a	O
twin-lens	B-Algorithm
reflex	I-Algorithm
camera	I-Algorithm
that	O
also	O
took	O
6×7	O
rectangular	O
pictures	O
on	O
120	O
roll	O
film	O
.	O
</s>
<s>
The	O
earlier	O
Koni-Omega	O
Rapid	O
(	O
Konica	O
Press	O
in	O
Japan	O
)	O
film	O
back	O
is	O
not	O
compatible	O
with	O
the	O
Koni/Rapid	O
Omega	B-Algorithm
film	O
magazine	O
system	O
,	O
and	O
does	O
not	O
permit	O
mid-roll	O
changes	O
.	O
</s>
<s>
Although	O
the	O
lenses	O
for	O
the	O
Omegaflex	O
shared	O
the	O
same	O
design	O
as	O
their	O
counterparts	O
for	O
the	O
Koni-Omega	O
,	O
the	O
Hexanon	O
lenses	O
for	O
Omegaflex	O
were	O
packaged	O
as	O
a	O
twin-lens	O
unit	O
and	O
were	O
not	O
interchangeable	O
with	O
those	O
from	O
the	O
Omega	B-Algorithm
line	O
.	O
</s>
<s>
Likewise	O
,	O
most	O
other	O
accessories	O
were	O
not	O
interchangeable	O
with	O
those	O
from	O
the	O
Omega	B-Algorithm
line	O
.	O
</s>
<s>
Under	O
Berkey	O
,	O
view	B-Algorithm
cameras	I-Algorithm
were	O
sold	O
in	O
the	O
United	O
States	O
as	O
the	O
Omega	B-Algorithm
View	O
45	O
.	O
</s>
<s>
Co	O
.	O
in	O
Japan	O
and	O
marketed	O
elsewhere	O
as	O
the	O
Toyo-View	O
;	O
Sakai	O
also	O
built	O
a	O
field	B-Algorithm
camera	I-Algorithm
,	O
which	O
was	O
sold	O
as	O
the	O
Toyo-Field	O
.	O
</s>
<s>
By	O
1985	O
,	O
Omega-branded	O
view	B-Algorithm
cameras	I-Algorithm
were	O
being	O
marketed	O
by	O
Berkey	O
alongside	O
Toyo-branded	O
view	O
and	O
field	B-Algorithm
cameras	I-Algorithm
.	O
</s>
<s>
The	O
first	O
Omega-branded	O
enlarger	O
sold	O
by	O
Simmon	O
Brothers	O
was	O
the	O
Omega	B-Algorithm
B	O
,	O
introduced	O
in	O
1937	O
.	O
</s>
<s>
After	O
the	O
eponymous	O
Simmon	O
brothers	O
retired	O
in	O
the	O
early	O
1960s	O
,	O
the	O
company	O
was	O
folded	O
into	O
Berkey	O
Photo	O
by	O
1964	O
as	O
the	O
Simmon-Omega	O
division	O
.	O
</s>
<s>
Berkey	O
went	O
bankrupt	O
in	O
the	O
late	O
1980s	O
and	O
Omega	B-Algorithm
was	O
purchased	O
by	O
RT	O
Corporation	O
and	O
rebranded	O
to	O
RT/Omega	O
(	O
1988	O
)	O
,	O
then	O
Omega/Arkay	O
(	O
after	O
acquiring	O
Arkay	O
,	O
1990	O
)	O
,	O
Omega/Satter	O
(	O
after	O
acquiring	O
Satter	O
,	O
1995	O
)	O
,	O
and	O
finally	O
Omega/Brandess	O
(	O
2010	O
)	O
.	O
</s>
<s>
No	O
new	O
Omega	B-Algorithm
enlargers	O
were	O
developed	O
after	O
1979	O
,	O
and	O
the	O
company	O
quietly	O
discontinued	O
enlarger	O
production	O
in	O
2014	O
.	O
</s>
