<s>
The	O
Nikon	B-Algorithm
D40	O
is	O
Nikon	B-Architecture
F-mount	I-Architecture
entry-level	O
digital	B-Device
SLR	I-Device
,	O
announced	O
November	O
16	O
,	O
2006	O
and	O
made	O
until	O
March	O
2009	O
,	O
when	O
it	O
was	O
succeeded	O
by	O
the	O
Nikon	B-Algorithm
D3000	I-Algorithm
.	O
</s>
<s>
Compared	O
to	O
its	O
predecessor	O
,	O
the	O
D50	B-Algorithm
,	O
the	O
D40	O
had	O
several	O
features	O
removed	O
,	O
a	O
few	O
added	O
,	O
and	O
a	O
lower	O
price	O
:	O
US	O
$499.95	O
ESP	O
as	O
of	O
November	O
2009	O
with	O
the	O
18	O
–	O
55	O
mm	O
G-II	O
kit	O
lens	O
,	O
positioning	O
it	O
as	O
an	O
entry-level	O
model	O
compared	O
to	O
the	O
D80	B-Algorithm
.	O
</s>
<s>
The	O
D40x	B-Algorithm
(	O
released	O
March	O
6	O
,	O
2007	O
)	O
has	O
a	O
10-megapixel	O
maximum	O
resolution	O
,	O
up	O
from	O
6	O
megapixels	O
of	O
the	O
D40	O
and	O
D50	B-Algorithm
.	O
</s>
<s>
The	O
D40	O
was	O
the	O
first	O
Nikon	B-Algorithm
DSLR	B-Device
without	O
an	O
in-body	O
focus	O
motor	O
.	O
</s>
<s>
Despite	O
being	O
superseded	O
by	O
newer	O
offerings	O
,	O
the	O
Nikon	B-Algorithm
D40	O
retained	O
some	O
significant	O
advantages	O
.	O
</s>
<s>
The	O
Nikon	B-Algorithm
D40	O
was	O
less	O
expensive	O
than	O
the	O
Canon	B-Algorithm
EOS	I-Algorithm
400D	I-Algorithm
(	O
also	O
known	O
as	O
the	O
Rebel	B-Algorithm
XTi	I-Algorithm
in	O
the	O
United	O
States	O
)	O
,	O
the	O
Pentax	B-Algorithm
K110D	I-Algorithm
,	O
and	O
the	O
Olympus	B-Algorithm
E-400	I-Algorithm
,	O
and	O
is	O
competitively	O
priced	O
against	O
high-end	O
bridge	B-Device
cameras	I-Device
(	O
the	O
D40	O
and	O
D40x	B-Algorithm
do	O
not	O
have	O
live	B-Device
preview	I-Device
,	O
unlike	O
bridge	O
digitals	O
)	O
.	O
</s>
<s>
Despite	O
having	O
a	O
comparatively	O
lower	O
resolution	O
for	O
a	O
DSLR	B-Device
introduced	O
in	O
2006	O
,	O
the	O
D40	O
held	O
some	O
benefits	O
over	O
its	O
newer	O
competition	O
such	O
as	O
the	O
Nikon	B-Algorithm
D40x	I-Algorithm
,	O
D60	B-Algorithm
,	O
and	O
Canon	B-Algorithm
Rebels	I-Algorithm
.	O
</s>
<s>
Because	O
only	O
6	O
megapixels	O
are	O
fit	O
onto	O
the	O
standard	O
Nikon	B-Algorithm
DX	O
format	O
sensor	O
,	O
the	O
sensitivity	O
of	O
each	O
pixel	O
is	O
higher	O
.	O
</s>
<s>
The	O
default	O
sensitivity	O
on	O
the	O
D40	O
is	O
ISO	O
200	O
,	O
and	O
the	O
D40	O
adds	O
an	O
ISO	O
3200	O
speed	O
(	O
listed	O
as	O
"	O
Hi1	O
"	O
in	O
the	O
camera	O
menu	O
)	O
compared	O
to	O
the	O
Nikon	B-Algorithm
D50	I-Algorithm
's	O
maximum	O
ISO	O
1600	O
.	O
</s>
<s>
This	O
compares	O
to	O
the	O
typical	O
1/200	O
sync	O
speed	O
of	O
other	O
entry	O
level	O
and	O
even	O
some	O
semi-pro	O
DSLR	B-Device
cameras	I-Device
such	O
as	O
the	O
Canon	B-Device
EOS	I-Device
40D	I-Device
with	O
its	O
1/250	O
sync	O
speed	O
.	O
</s>
<s>
The	O
D40x	B-Algorithm
does	O
not	O
share	O
this	O
ability	O
.	O
</s>
<s>
The	O
D40	O
lacks	O
a	O
built-in	O
autofocus	O
motor	O
,	O
which	O
means	O
that	O
only	O
Nikon	B-Architecture
lenses	I-Architecture
designated	O
with	O
AF-I	O
,	O
AF-S	O
or	O
compatible	O
focus	O
motors	O
can	O
be	O
used	O
in	O
autofocus	O
mode	O
.	O
</s>
<s>
The	O
Nikon	B-Algorithm
D40	O
was	O
tested	O
by	O
various	O
independent	O
reviewers	O
,	O
receiving	O
generally	O
very	O
favorable	O
comments	O
for	O
its	O
ergonomics	O
and	O
image	O
quality	O
.	O
</s>
<s>
On	O
March	O
6	O
,	O
2007	O
,	O
Nikon	B-Algorithm
introduced	O
the	O
D40X	B-Algorithm
,	O
a	O
sister	O
camera	O
to	O
the	O
D40	O
.	O
</s>
<s>
While	O
identical	O
in	O
external	O
design	O
to	O
the	O
D40	O
,	O
it	O
has	O
a	O
10.2-megapixel	O
CCD	B-Algorithm
sensor	I-Algorithm
,	O
continuous	O
shooting	O
up	O
to	O
3	O
frames	O
per	O
second	O
,	O
and	O
a	O
base	O
sensitivity	O
of	O
ISO	O
100	O
(	O
as	O
noted	O
above	O
,	O
each	O
pixel	O
in	O
the	O
10.2-megapixel	O
sensor	O
receives	O
less	O
light	O
than	O
the	O
pixels	O
in	O
the	O
D40	O
sensor	O
)	O
.	O
</s>
<s>
Nikon	B-Algorithm
ceased	O
production	O
of	O
the	O
D40X	B-Algorithm
in	O
December	O
2007	O
,	O
shortly	O
before	O
they	O
introduced	O
its	O
successor	O
,	O
the	O
Nikon	B-Algorithm
D60	I-Algorithm
.	O
</s>
