<s>
The	O
Nikon	B-Algorithm
D2H	I-Algorithm
is	O
a	O
professional-grade	O
digital	B-Device
single-lens	I-Device
reflex	I-Device
camera	I-Device
introduced	O
by	O
Nikon	O
Corporation	O
on	O
July	O
22	O
,	O
2003	O
.	O
</s>
<s>
In	O
2005	O
,	O
the	O
D2H	O
was	O
replaced	O
by	O
the	O
D2Hs	B-Algorithm
,	O
which	O
added	O
new	O
features	O
derived	O
from	O
the	O
12-megapixel	O
D2X	B-Algorithm
digital	B-Device
SLR	I-Device
.	O
</s>
<s>
The	O
D2Hs	B-Algorithm
was	O
discontinued	O
after	O
the	O
introduction	O
of	O
the	O
D300	B-Algorithm
and	O
D3	B-Algorithm
models	O
.	O
</s>
<s>
Like	O
most	O
early	O
Nikon	O
Digital	B-Device
SLR	I-Device
cameras	I-Device
,	O
it	O
uses	O
a	O
"	O
DX	O
Format	O
"	O
sensor	O
,	O
which	O
applies	O
a	O
crop	O
factor	O
compared	O
to	O
35	O
mm	O
film	O
of	O
approximately	O
1.5	O
×	O
.	O
</s>
<s>
The	O
D2Hs	B-Algorithm
was	O
announced	O
on	O
February	O
16	O
,	O
2005	O
,	O
adding	O
several	O
improvements	O
to	O
the	O
D2H	O
design	O
,	O
although	O
with	O
the	O
same	O
sensor	O
and	O
body	O
.	O
</s>
<s>
Like	O
the	O
D2X	B-Algorithm
,	O
it	O
features	O
a	O
recent	O
settings	O
list	O
,	O
world	O
time	O
function	O
,	O
and	O
modified	O
vertical	O
shooting	O
buttons	O
and	O
CompactFlash	B-Device
card	I-Device
door	O
opening	O
.	O
</s>
<s>
The	O
D2Hs	B-Algorithm
features	O
a	O
continuous	O
burst	O
rate	O
of	O
up	O
to	O
8	O
frames	O
per	O
second	O
,	O
with	O
a	O
buffer	O
capacity	O
of	O
50	O
JPEG	O
files	O
or	O
40	O
NEF	O
(	O
Nikon	O
Electric	O
Format	O
-	O
Nikon	O
's	O
proprietary	O
Camera	O
RAW	O
image	O
format	O
)	O
files	O
.	O
</s>
<s>
The	O
D2Hs	B-Algorithm
,	O
like	O
the	O
D2X	B-Algorithm
,	O
offers	O
compatibility	O
with	O
Non-CPU	O
AI	O
Nikkor	O
lenses	O
,	O
which	O
are	O
usable	O
in	O
aperture-priority	O
or	O
manual	O
exposure	O
mode	O
with	O
Matrix-Metering	O
,	O
Center-Weighted	O
and	O
Spot	O
metering	O
available	O
.	O
</s>
<s>
Although	O
the	O
D2Hs	B-Algorithm
has	O
been	O
considered	O
by	O
some	O
to	O
be	O
obsolete	O
from	O
its	O
very	O
introduction	O
due	O
to	O
its	O
relatively	O
low	O
4.1	O
megapixel	O
resolution	O
,	O
the	O
D2Hs	B-Algorithm
has	O
a	O
reputation	O
for	O
extremely	O
high	O
image	O
quality	O
and	O
excellent	O
detail	O
rendition	O
.	O
</s>
