<s>
The	O
Nikon	B-Algorithm
D50	I-Algorithm
is	O
a	O
6.1-megapixel	O
entry-level	O
digital	B-Device
single-lens	I-Device
reflex	I-Device
camera	I-Device
,	O
sold	O
from	O
June	O
2005	O
until	O
November	O
2006	O
by	O
Nikon	B-Algorithm
.	O
</s>
<s>
It	O
was	O
Nikon	B-Algorithm
's	O
first	O
DSLR	B-Device
aimed	O
at	O
the	O
consumer	O
market	O
,	O
and	O
sold	O
for	O
US$899	O
.	O
</s>
<s>
It	O
uses	O
the	O
Nikon	B-Architecture
F	I-Architecture
mount	I-Architecture
.	O
</s>
<s>
The	O
D50	O
is	O
similar	O
to	O
the	O
slightly	O
older	O
D70	B-Algorithm
using	O
the	O
same	O
CCD	B-Algorithm
sensor	I-Algorithm
,	O
with	O
a	O
slower	O
maximum	O
shutter	O
speed	O
and	O
slightly	O
smaller	O
size	O
;	O
however	O
,	O
it	O
continued	O
to	O
offer	O
the	O
internal	O
focus	O
motor	O
of	O
prior	O
autofocus	O
film	O
and	O
digital	B-Device
SLRs	I-Device
.	O
</s>
<s>
Future	O
entry-level	O
Nikon	B-Algorithm
DSLRs	B-Device
(	O
D40	O
,	O
D60	O
,	O
D3000	O
,	O
D5000	O
)	O
would	O
eliminate	O
the	O
internal	O
focus	O
motor	O
and	O
require	O
these	O
motors	O
to	O
be	O
in	O
the	O
lenses	O
.	O
</s>
<s>
It	O
has	O
a	O
23.7mm	O
by	O
15.6mm	O
DX	O
format	O
image	B-Algorithm
sensor	I-Algorithm
with	O
6.1	O
million	O
effective	O
pixels	B-Algorithm
.	O
</s>
<s>
It	O
also	O
has	O
a	O
2.0	O
"	O
(	O
50mm	O
)	O
polysilicon	O
TFT	B-Device
LCD	I-Device
with	O
130,000	O
pixels	B-Algorithm
.	O
</s>
<s>
It	O
can	O
simultaneously	O
record	O
NEF	B-Application
and	O
JPEG	O
data	O
to	O
a	O
Secure	B-Device
Digital	I-Device
storage	O
device	O
.	O
</s>
<s>
Like	O
its	O
newer	O
,	O
higher-end	O
sibling	O
(	O
the	O
D80	B-Algorithm
)	O
,	O
the	O
D50	O
uses	O
Secure	B-Device
Digital	I-Device
instead	O
of	O
CompactFlash	B-Device
cards	I-Device
found	O
on	O
previous	O
Nikon	B-Algorithm
digital	B-Device
SLRs	I-Device
.	O
</s>
<s>
The	O
camera	O
is	O
compatible	O
with	O
PictBridge	B-Algorithm
printers	O
and	O
can	O
shoot	O
2.5	O
frames	O
per	O
second	O
in	O
continuous	O
mode	O
.	O
</s>
<s>
The	O
D50	O
is	O
the	O
only	O
entry-level	O
Nikon	B-Algorithm
DSLR	B-Device
to	O
have	O
the	O
autofocus	O
motor	O
( 	O
 '	O
screw	O
drive	O
 '	O
)	O
built	O
into	O
the	O
camera	O
body	O
,	O
making	O
the	O
camera	O
backwards-compatible	O
with	O
mechanical-drive	O
autofocus	O
lenses	O
(	O
Nikkor	O
AF/AF	O
-D	O
series	O
)	O
dating	O
back	O
to	O
1989	O
.	O
</s>
<s>
This	O
makes	O
the	O
D50	O
the	O
lightest	O
Nikon	B-Algorithm
DSLR	B-Device
to	O
have	O
the	O
autofocus	O
motor	O
.	O
</s>
<s>
Competitors	O
of	O
the	O
D50	O
included	O
the	O
Canon	B-Algorithm
EOS	I-Algorithm
350D	I-Algorithm
,	O
the	O
Pentax	B-Algorithm
*	I-Algorithm
ist	I-Algorithm
DS	I-Algorithm
,	O
the	O
Konica	B-Device
Minolta	I-Device
Dynax	I-Device
5D	I-Device
,	O
and	O
the	O
Olympus	B-Algorithm
E-300	I-Algorithm
.	O
</s>
<s>
The	O
website	O
Digital	O
Photography	O
Review	O
rated	O
the	O
D50	O
highly	O
and	O
noted	O
its	O
improved	O
noise	O
performance	O
over	O
the	O
D70s	B-Algorithm
it	O
was	O
largely	O
derived	O
from	O
,	O
although	O
it	O
had	O
fewer	O
hobbyist	O
features	O
(	O
making	O
the	O
D50	O
the	O
first	O
de-specified	O
entry-level	O
DSLR	B-Device
camera	I-Device
thus	O
lowering	O
the	O
MSRP	B-Protocol
)	O
and	O
a	O
lower	O
price	O
than	O
the	O
D70s	B-Algorithm
.	O
</s>
<s>
Testing	O
by	O
Roger	O
Clark	O
confirmed	O
that	O
the	O
D50	O
had	O
higher	O
gain	O
and	O
lower	O
noise	O
than	O
the	O
D70	B-Algorithm
.	O
</s>
