<s>
The	O
EOS-1N	B-Algorithm
is	O
a	O
35mm	O
single	B-Algorithm
lens	I-Algorithm
reflex	I-Algorithm
(	O
SLR	B-Algorithm
)	O
camera	O
body	O
produced	O
by	O
Canon	O
.	O
</s>
<s>
It	O
was	O
announced	O
by	O
Canon	O
in	O
1994	O
,	O
and	O
was	O
the	O
professional	O
model	O
in	O
the	O
range	O
,	O
superseding	O
the	O
original	O
EOS-1	O
.	O
</s>
<s>
The	O
camera	O
was	O
itself	O
superseded	O
by	O
the	O
EOS-1v	B-Algorithm
in	O
2000	O
.	O
</s>
<s>
The	O
original	O
EOS-1	O
had	O
been	O
launched	O
in	O
1989	O
,	O
two	O
years	O
after	O
the	O
company	O
had	O
introduced	O
their	O
new	O
EOS	B-Algorithm
autofocus	O
system	O
.	O
</s>
<s>
It	O
was	O
the	O
company	O
's	O
first	O
professional-level	O
EOS	B-Algorithm
camera	I-Algorithm
and	O
was	O
aimed	O
at	O
the	O
same	O
photographers	O
who	O
had	O
used	O
Canon	O
's	O
highly	O
regarded	O
,	O
manual	O
focus	O
professional	O
FD	B-Algorithm
mount	I-Algorithm
SLRs	B-Algorithm
,	O
such	O
as	O
the	O
Canon	B-Algorithm
New	I-Algorithm
F-1	I-Algorithm
and	O
the	O
Canon	O
T90	O
.	O
</s>
<s>
On	O
a	O
physical	O
level	O
the	O
EOS-1	O
resembled	O
the	O
T90	O
,	O
which	O
had	O
been	O
designed	O
for	O
Canon	O
by	O
Luigi	O
Colani	O
.	O
</s>
<s>
The	O
EOS-1N	B-Algorithm
was	O
a	O
revision	O
of	O
the	O
EOS-1	O
,	O
with	O
five	O
autofocus	O
points	O
spread	O
across	O
the	O
frame	O
rather	O
than	O
a	O
single	O
centrally-mounted	O
autofocus	O
point	O
,	O
plus	O
more	O
effective	O
weather	O
sealing	O
,	O
a	O
wider	O
exposure	O
range	O
,	O
and	O
numerous	O
other	O
improvements	O
.	O
</s>
<s>
In	O
common	O
with	O
the	O
EOS-1	O
,	O
the	O
1N	O
used	O
Canon	O
's	O
A-TTL	B-Algorithm
automatic	I-Algorithm
flash	I-Algorithm
system	I-Algorithm
,	O
and	O
does	O
not	O
support	O
the	O
more	O
modern	O
E-TTL	O
.	O
</s>
<s>
At	O
the	O
time	O
of	O
its	O
creation	O
,	O
The	O
Canon	B-Algorithm
EOS-1N	I-Algorithm
was	O
placed	O
at	O
the	O
top	O
of	O
Canon	O
's	O
EOS	B-Algorithm
camera	I-Algorithm
line	O
.	O
</s>
<s>
The	O
camera	O
featured	O
polycarbonate	O
external	O
construction	O
with	O
weather-resistant	O
seals	O
around	O
buttons	O
,	O
dials	O
and	O
its	O
Canon	B-Application
EF	I-Application
lens	I-Application
mount	I-Application
.	O
</s>
<s>
The	O
camera	O
has	O
user-interchangeable	O
focusing	O
screens	O
,	O
interchangeable	O
with	O
those	O
out	O
of	O
other	O
EOS-1-series	O
cameras	O
,	O
and	O
a	O
now-discontinued	O
interchangeable	O
Canon	O
Command	O
Back	O
E1	O
.	O
</s>
<s>
There	O
were	O
several	O
versions	O
of	O
the	O
EOS-1N	B-Algorithm
available	O
.	O
</s>
<s>
The	O
base	O
model	O
EOS-1N	B-Algorithm
consisted	O
of	O
the	O
standard	O
camera	O
body	O
with	O
significant	O
upgrades	O
over	O
the	O
EOS	B-Algorithm
1	O
,	O
launched	O
in	O
1989	O
.	O
</s>
<s>
The	O
EOS-1N	B-Algorithm
DP	O
comprised	O
the	O
standard	O
body	O
and	O
the	O
BP-E1	O
pack	O
(	O
see	O
below	O
)	O
and	O
the	O
EOS-1N	B-Algorithm
HS	O
comprised	O
the	O
standard	O
body	O
plus	O
booster	O
(	O
see	O
below	O
)	O
.	O
</s>
<s>
One	O
feature	O
the	O
EOS-1N	B-Algorithm
(	O
and	O
previous/subsequent	O
'	O
1	O
 '	O
models	O
)	O
lacks	O
,	O
which	O
lower	O
models	O
in	O
the	O
range	O
have	O
,	O
is	O
built-in	O
flash	O
,	O
intentionally	O
omitted	O
to	O
provide	O
an	O
overall	O
very	O
rigid	O
camera	O
body	O
able	O
to	O
withstand	O
severe	O
treatment	O
by	O
professionals	O
.	O
</s>
<s>
Other	O
notable	O
omissions	O
are	O
the	O
eye-controlled	O
focus	O
feature	O
of	O
the	O
EOS	B-Algorithm
5	O
and	O
the	O
bar	O
code	O
reader	O
of	O
the	O
EOS	B-Algorithm
10	O
,	O
neither	O
of	O
which	O
are	O
professional-level	O
cameras	O
.	O
</s>
<s>
Another	O
feature	O
of	O
the	O
EOS-1N	B-Algorithm
,	O
and	O
other	O
professional	O
models	O
in	O
the	O
range	O
,	O
is	O
the	O
provision	O
for	O
a	O
precise	O
viewfinder	O
indication	O
of	O
exposure	O
in	O
manual	O
mode	O
.	O
</s>
<s>
The	O
EOS-1N	B-Algorithm
provides	O
a	O
viewfinder	O
readout	O
similar	O
to	O
the	O
old	O
F-1	O
'	O
s	O
needle	O
display	O
,	O
but	O
in	O
electronic	O
LCD	O
form	O
showing	O
steps	O
in	O
0.3	O
,	O
0.5	O
or	O
1	O
stops	O
.	O
</s>
<s>
Like	O
the	O
EOS	B-Algorithm
5	O
,	O
the	O
internal	O
displays	O
of	O
the	O
EOS	B-Algorithm
1N	I-Algorithm
self-adjust	O
in	O
brightness	O
in	O
response	O
to	O
the	O
brightness	O
level	O
of	O
the	O
subject	O
.	O
</s>
<s>
In	O
addition	O
to	O
the	O
standard	O
EOS-1N	B-Algorithm
there	O
was	O
another	O
,	O
specialised	O
model	O
in	O
the	O
range	O
—	O
the	O
EOS-1N	B-Algorithm
RS	O
,	O
introduced	O
in	O
1995	O
,	O
with	O
a	O
permanently	O
attached	O
power	O
drive	O
booster	O
.	O
</s>
<s>
This	O
camera	O
has	O
a	O
fixed	O
pellicle	B-Algorithm
mirror	I-Algorithm
so	O
there	O
is	O
no	O
viewfinder	O
black-out	O
at	O
the	O
moment	O
of	O
exposure	O
.	O
</s>
<s>
By	O
the	O
time	O
of	O
the	O
release	O
of	O
the	O
next	O
generation	O
EOS	B-Algorithm
1V	O
,	O
considerable	O
technical	O
improvements	O
to	O
the	O
standard	O
camera	O
design	O
meant	O
that	O
Canon	O
no	O
longer	O
offered	O
RS	O
model	O
variants	O
.	O
</s>
<s>
The	O
EOS	B-Algorithm
1N	I-Algorithm
was	O
discontinued	O
in	O
2001	O
with	O
the	O
arrival	O
of	O
the	O
EOS	B-Algorithm
1V	O
.	O
</s>
<s>
During	O
the	O
late	O
1990s	O
,	O
Canon	O
and	O
Kodak	O
collaborated	O
on	O
a	O
range	O
of	O
professional	O
digital	O
SLRs	B-Algorithm
which	O
combined	O
Canon	B-Algorithm
EOS-1N	I-Algorithm
bodies	O
with	O
Kodak	O
digital	O
sensors	O
and	O
electronics	O
.	O
</s>
<s>
They	O
were	O
Canon	O
's	O
first	O
ventures	O
into	O
the	O
digital	O
SLR	B-Algorithm
marketplace	O
and	O
divided	O
into	O
two	O
distinct	O
generations	O
.	O
</s>
<s>
The	O
first	O
generation	O
was	O
the	O
Kodak	O
EOS	B-Algorithm
DCS	O
series	O
of	O
1995	O
,	O
which	O
encompassed	O
the	O
6	O
mp	O
EOS	B-Device
DCS	I-Device
1	I-Device
,	O
the	O
1.5	O
mp	O
DCS	B-Device
3	I-Device
,	O
and	O
the	O
1.3	O
mp	O
DCS	O
5	O
.	O
</s>
<s>
The	O
EOS	B-Algorithm
1N	I-Algorithm
camera	O
bodies	O
were	O
almost	O
unmodified	O
from	O
stock	O
configuration	O
,	O
and	O
were	O
mounted	O
on	O
a	O
removable	O
Kodak	O
digital	O
back	O
.	O
</s>
<s>
The	O
relationship	O
continued	O
with	O
the	O
Kodak	O
DCS	O
500	O
series	O
,	O
which	O
fully	O
integrated	O
the	O
EOS-1N	B-Algorithm
body	O
with	O
Kodak	O
's	O
imaging	O
components	O
.	O
</s>
<s>
The	O
two	O
cameras	O
were	O
also	O
sold	O
by	O
Canon	O
,	O
as	O
the	O
Canon	B-Algorithm
EOS	I-Algorithm
D2000	I-Algorithm
and	O
D6000	O
respectively	O
.	O
</s>
<s>
Canon	O
's	O
subsequent	O
professional	O
digital	O
SLRs	B-Algorithm
were	O
produced	O
independently	O
of	O
Kodak	O
,	O
and	O
were	O
initially	O
based	O
on	O
the	O
Canon	B-Algorithm
EOS-1V	I-Algorithm
,	O
before	O
moving	O
to	O
custom-designed	O
digital	O
bodies	O
.	O
</s>
