<s>
The	O
Nikon	B-Algorithm
F-601	O
,	O
otherwise	O
known	O
as	O
the	O
Nikon	B-Algorithm
N6006	O
,	O
is	O
a	O
35mm	O
single-lens	B-Algorithm
reflex	I-Algorithm
(	O
SLR	B-Algorithm
)	O
film	O
camera	O
that	O
was	O
produced	O
by	O
Nikon	B-Algorithm
starting	O
in	O
1991	O
.	O
</s>
<s>
The	O
F601	O
featured	O
an	O
improved	O
second-generation	O
autofocus	O
system	O
,	O
motor	B-Algorithm
drive	I-Algorithm
for	O
automatic	O
film	O
advance	O
,	O
a	O
built-in	O
pop-up	O
electronic	O
flash	O
,	O
a	O
top	O
shutter	O
speed	O
of	O
1/2000	O
of	O
a	O
second	O
,	O
and	O
a	O
new	O
"	O
Matrix	O
"	O
evaluative	O
multi-zone	O
metering	O
program	O
.	O
</s>
<s>
The	O
camera	O
includes	O
an	O
integrated	O
motor	B-Algorithm
drive	I-Algorithm
and	O
is	O
also	O
available	O
in	O
a	O
version	O
with	O
a	O
date	O
back	O
,	O
which	O
could	O
be	O
set	O
to	O
print	O
the	O
date	O
and	O
time	O
on	O
the	O
photo	O
film	O
as	O
images	O
were	O
acquired	O
.	O
</s>
<s>
It	O
is	O
compatible	O
with	O
a	O
wide	O
range	O
of	O
Nikon	B-Architecture
F-mount	I-Architecture
lenses	O
,	O
including	O
both	O
autofocus	O
and	O
manual	O
focus	O
types	O
.	O
</s>
<s>
However	O
,	O
Nikon	B-Algorithm
's	O
older	O
,	O
non-AI	O
modified	O
lenses	O
will	O
not	O
mount	O
without	O
modification	O
.	O
</s>
<s>
Due	O
to	O
a	O
firmware	O
defect	O
,	O
G-type	O
lenses	O
without	O
an	O
aperture	O
ring	O
are	O
compatible	O
(	O
in	O
program	O
and	O
shutter	O
priority	O
modes	O
)	O
only	O
if	O
the	O
aperture	O
ring	O
position	O
sensor	O
is	O
manually	O
actuated	O
to	O
its	O
maximum	O
position	O
,	O
therefore	O
their	O
use	O
is	O
not	O
endorsed	O
by	O
Nikon	B-Algorithm
.	O
</s>
<s>
During	O
the	O
1990s	O
,	O
the	O
F-601	O
sat	O
between	O
the	O
Nikon	B-Algorithm
F-401	I-Algorithm
and	O
Nikon	B-Algorithm
F-801s	I-Algorithm
in	O
the	O
company	O
's	O
consumer	O
SLR	B-Algorithm
range	O
.	O
</s>
<s>
A	O
version	O
without	O
autofocus	O
or	O
built-in	O
flash	O
was	O
sold	O
as	O
the	O
Nikon	B-Algorithm
F-601M	I-Algorithm
.	O
</s>
