<s>
The	O
Nikon	B-Algorithm
F90	I-Algorithm
(	O
known	O
as	O
the	O
N90	O
in	O
the	O
United	O
States	O
)	O
is	O
a	O
35mm	O
SLR	B-Algorithm
camera	I-Algorithm
manufactured	O
between	O
1992	O
and	O
2001	O
and	O
replaced	O
the	O
earlier	O
Nikon	B-Algorithm
F-801	I-Algorithm
(	O
N8008	B-Algorithm
in	O
the	O
U.S.	O
)	O
.	O
</s>
<s>
The	O
Nikon	O
F4	O
,	O
the	O
professional	O
model	O
available	O
at	O
the	O
time	O
of	O
the	O
F90	O
's	O
release	O
,	O
had	O
very	O
slow	O
autofocus	O
compared	O
to	O
Canon	O
's	O
autofocus	O
SLRs	B-Algorithm
.	O
</s>
<s>
The	O
Nikon	B-Algorithm
F90	I-Algorithm
's	O
autofocus	O
system	O
was	O
driven	O
by	O
a	O
small	O
'	O
peanut	O
 '	O
motor	O
in	O
the	O
camera	O
body	O
that	O
drove	O
the	O
lens	O
via	O
a	O
mechanical	O
link	O
,	O
unlike	O
Canon	O
's	O
autofocus	O
system	O
,	O
which	O
used	O
motors	O
built	O
into	O
each	O
lens	O
.	O
</s>
<s>
It	O
was	O
also	O
the	O
first	O
Nikon	O
SLR	B-Algorithm
to	O
interoperate	O
with	O
the	O
first	O
generation	O
of	O
Nikkor	O
lenses	O
featuring	O
internal	O
focusing	O
motor	O
.	O
</s>
<s>
Despite	O
not	O
being	O
intended	O
for	O
the	O
professional	O
market	O
,	O
the	O
Nikon	B-Algorithm
F90	I-Algorithm
and	O
its	O
upgrade	O
,	O
the	O
F90x	B-Algorithm
,	O
were	O
built	O
to	O
a	O
high	O
standard	O
and	O
were	O
(	O
and	O
are	O
still	O
)	O
used	O
by	O
many	O
professionals	O
.	O
</s>
<s>
However	O
,	O
many	O
F90	O
and	O
F90x	B-Algorithm
bodies	O
had	O
problems	O
with	O
the	O
rubberized	O
back	O
,	O
where	O
the	O
rubberized	O
coating	O
would	O
start	O
peeling	O
or	O
turn	O
into	O
a	O
sticky	O
mess	O
.	O
</s>
<s>
The	O
Nikon	O
F90x	B-Algorithm
(	O
known	O
in	O
the	O
United	O
States	O
as	O
the	O
N90s	B-Algorithm
)	O
was	O
a	O
slightly	O
upgraded	O
version	O
of	O
the	O
F90	O
.	O
</s>
<s>
The	O
optional	O
MB-10	O
battery	B-Algorithm
grip	I-Algorithm
which	O
takes	O
4	O
AA	O
batteries	O
and	O
which	O
fits	O
on	O
to	O
the	O
base	O
of	O
the	O
camera	O
was	O
also	O
introduced	O
.	O
</s>
<s>
The	O
MB-10	O
will	O
fully	O
work	O
only	O
on	O
the	O
F90x	B-Algorithm
and	O
N90s	B-Algorithm
models	O
.	O
</s>
<s>
The	O
operational	O
speed	O
,	O
battery	O
duration	O
and	O
frame	O
rate	O
of	O
the	O
F90X	B-Algorithm
remain	O
identical	O
either	O
with	O
or	O
without	O
the	O
MB-10	O
.	O
</s>
<s>
The	O
F90	O
(	O
and	O
subsequent	O
F90x	B-Algorithm
)	O
features	O
a	O
10-pin	O
remote	O
release	O
socket	O
.	O
</s>
<s>
The	O
F90/F90x	O
uses	O
lenses	O
with	O
the	O
Nikon	B-Architecture
F	I-Architecture
mount	I-Architecture
.	O
</s>
<s>
Unlike	O
the	O
earlier	O
F-801/F	O
-801s	O
,	O
the	O
F90/F90x	O
supports	O
autofocus	O
with	O
the	O
AF-I/AF	O
-S	O
series	O
lenses	O
with	O
built-in	O
motors	O
.	O
</s>
<s>
In	O
collaboration	O
with	O
Nikon	O
,	O
Kodak	O
used	O
F90	O
and	O
F90s	O
bodies	O
as	O
the	O
basis	O
for	O
the	O
Kodak	B-Device
DCS	I-Device
400	I-Device
series	I-Device
of	O
digital	O
SLRs	B-Algorithm
.	O
</s>
<s>
The	O
DCS	O
410	O
and	O
early	O
DCS	O
420	O
models	O
used	O
the	O
F90	O
(	O
badged	O
as	O
N90	O
)	O
,	O
and	O
the	O
later	O
DCS	O
420	O
,	O
DCS	O
460	O
,	O
and	O
NC2000	O
used	O
the	O
F90x	B-Algorithm
(	O
badged	O
N90s	B-Algorithm
)	O
.	O
</s>
