<s>
The	O
Land	B-Algorithm
Camera	I-Algorithm
is	O
a	O
model	O
of	O
self-developing	O
film	O
camera	O
manufactured	O
by	O
Polaroid	O
between	O
1948	O
and	O
1983	O
.	O
</s>
<s>
Underneath	O
each	O
layer	O
are	O
dye	O
developing	O
molecules	O
in	O
their	O
complementary	O
colors	O
of	O
yellow	O
,	O
magenta	B-Algorithm
,	O
and	O
cyan	O
.	O
</s>
<s>
For	O
instance	O
,	O
when	O
blue	O
strikes	O
the	O
blue	O
sensitive	O
emulsion	O
layer	O
,	O
it	O
blocks	O
the	O
yellow	O
dye	O
,	O
but	O
allows	O
the	O
magenta	B-Algorithm
and	O
cyan	O
dyes	O
to	O
transfer	O
to	O
the	O
positive	O
,	O
which	O
combine	O
to	O
create	O
blue	O
.	O
</s>
<s>
When	O
green	O
and	O
red	O
(	O
yellow	O
)	O
strikes	O
their	O
respective	O
layers	O
,	O
it	O
blocks	O
the	O
complementary	O
dyes	O
of	O
magenta	B-Algorithm
and	O
cyan	O
below	O
them	O
,	O
allowing	O
only	O
yellow	O
dye	O
to	O
transfer	O
to	O
the	O
positive	O
.	O
</s>
<s>
The	O
Polaroid	B-Algorithm
SX-70	I-Algorithm
was	O
the	O
first	O
camera	O
to	O
use	O
this	O
film	O
.	O
</s>
<s>
Improvements	O
in	O
SX-70	B-Algorithm
film	O
led	O
to	O
the	O
higher	O
speed	O
600	O
series	O
film	O
,	O
then	O
to	O
different	O
formats	O
such	O
as	O
500	O
series	O
(	O
captiva	O
)	O
,	O
and	O
spectra	O
.	O
</s>
<s>
The	O
original	O
cameras	O
folded	O
into	O
the	O
body	O
and	O
used	O
bellows	B-Algorithm
to	O
protect	O
the	O
light	O
path	O
.	O
</s>
<s>
The	O
exception	O
to	O
this	O
is	O
the	O
Polaroid	B-Algorithm
Swinger	I-Algorithm
,	O
a	O
hard	O
bodied	O
roll	O
film	O
camera	O
whose	O
film	O
was	O
pulled	O
out	O
of	O
the	O
camera	O
body	O
to	O
develop	O
outside	O
the	O
camera	O
.	O
</s>
<s>
Hard	O
body	O
plastic	O
models	O
were	O
marketed	O
later	O
a	O
low	O
cost	O
alternative	O
to	O
the	O
more	O
expensive	O
models	O
with	O
bellows	B-Algorithm
.	O
</s>
<s>
Polaroid	O
B.V.	O
manufactures	O
and	O
sells	O
Polaroid	O
integrative	O
type	O
film	O
for	O
600	O
and	O
SX-70	B-Algorithm
cameras	O
.	O
</s>
