<s>
The	O
Nikon	B-Algorithm
D3100	I-Algorithm
is	O
a	O
14.2-megapixel	O
DX	O
format	O
DSLR	B-Device
Nikon	B-Architecture
F-mount	I-Architecture
camera	O
announced	O
by	O
Nikon	B-Algorithm
on	O
August	O
19	O
,	O
2010	O
.	O
</s>
<s>
It	O
replaced	O
the	O
D3000	B-Algorithm
as	O
Nikon	B-Algorithm
's	O
entry	O
level	O
DSLR	B-Device
.	O
</s>
<s>
It	O
introduced	O
Nikon	B-Algorithm
's	O
new	O
EXPEED	B-Algorithm
2	I-Algorithm
image	B-General_Concept
processor	I-General_Concept
and	O
was	O
the	O
first	O
Nikon	B-Algorithm
DSLR	B-Device
featuring	O
full	O
high-definition	O
video	O
recording	O
with	O
full-time	O
autofocus	O
and	O
H.264	B-Application
compression	O
,	O
instead	O
of	O
Motion	B-Application
JPEG	I-Application
compression	O
.	O
</s>
<s>
It	O
was	O
also	O
the	O
first	O
Nikon	B-Algorithm
DSLR	B-Device
to	O
provide	O
high-definition	O
video	O
recording	O
at	O
more	O
than	O
one	O
frame	O
rate	O
.	O
</s>
<s>
On	O
April	O
19	O
,	O
2012	O
,	O
the	O
D3200	B-Algorithm
superseded	O
the	O
D3100	B-Algorithm
as	O
Nikon	B-Algorithm
's	O
entry-level	O
DSLR	B-Device
.	O
</s>
<s>
Nikon	B-Algorithm
's	O
14.2-megapixel	O
Nikon	B-Algorithm
DX	O
format	O
CMOS	B-Architecture
sensor	I-Architecture
with	O
12	O
Bit	O
Resolution	O
.	O
</s>
<s>
Nikon	B-Algorithm
EXPEED	I-Algorithm
2	O
image	B-General_Concept
processor	I-General_Concept
.	O
</s>
<s>
Live	B-Device
view	I-Device
mode	O
.	O
</s>
<s>
Nikon	B-Architecture
F-mount	I-Architecture
lenses	O
.	O
</s>
<s>
Like	O
Nikon	B-Algorithm
's	O
other	O
consumer-level	O
DSLRs	B-Device
,	O
the	O
D3100	B-Algorithm
has	O
no	O
in-body	O
autofocus	O
motor	O
,	O
and	O
fully	O
automatic	O
autofocus	O
requires	O
one	O
of	O
the	O
currently	O
162	O
lenses	O
with	O
an	O
integrated	O
autofocus-motor	O
.	O
</s>
<s>
The	O
Nikon	B-Algorithm
D3100	I-Algorithm
has	O
available	O
accessories	O
such	O
as	O
:	O
</s>
<s>
Nikon	B-Algorithm
GP-1	O
GPS	O
Unit	O
for	O
direct	O
GPS	O
geotagging	O
.	O
</s>
<s>
Third	O
party	O
solutions	O
partly	O
with	O
3-axis	O
compass	B-Language
,	O
data-logger	O
,	O
bluetooth	B-Protocol
and	O
support	O
for	O
indoor	O
use	O
are	O
available	O
from	O
Solmeta	O
,	O
Dawn	O
,	O
Easytag	O
,	O
Foolography	O
,	O
Gisteq	O
and	O
Phottix	O
.	O
</s>
<s>
Battery	B-Algorithm
grip	I-Algorithm
third	O
party	O
solutions	O
are	O
available	O
.	O
</s>
<s>
Nikon	B-Algorithm
CF-DC1	O
Soft	O
Case	O
.	O
</s>
<s>
Third	O
party	O
solutions	O
for	O
WLAN	B-Architecture
transmitter	O
are	O
available	O
.	O
</s>
<s>
Various	O
Nikon	B-Algorithm
Speedlight	O
or	O
third	O
party	O
flash	O
units	O
including	O
devices	O
with	O
Nikon	B-Algorithm
Creative	O
Lighting	O
System	O
wireless	O
flash	O
commander	O
or	O
support	O
for	O
SU-800	O
Wireless	O
Speedlight	O
Commander	O
.	O
</s>
<s>
Third	O
party	O
radio	O
(	O
wireless	O
)	O
flash	O
control	O
triggers	O
are	O
partly	O
supporting	O
i-TTL	O
,	O
but	O
do	O
not	O
support	O
the	O
Nikon	B-Algorithm
Creative	O
Lighting	O
System	O
(	O
CLS	O
)	O
.	O
</s>
<s>
Note	O
:	O
Lenses	O
without	O
an	O
internal	O
autofocus	O
motor	O
can	O
only	O
use	O
manual	O
focus	O
on	O
the	O
Nikon	B-Algorithm
D3100	I-Algorithm
.	O
</s>
<s>
Other	O
accessories	O
from	O
Nikon	B-Algorithm
and	O
third	O
parties	O
,	O
include	O
protective	O
cases	O
and	O
bags	O
,	O
eyepiece	O
adapters	O
and	O
correction	O
lenses	O
,	O
and	O
underwater	O
housings	O
.	O
</s>
<s>
The	O
D3100	B-Algorithm
has	O
received	O
many	O
independent	O
reviews	O
and	O
image	O
comparisons	O
at	O
all	O
ISO	O
speeds	O
.	O
</s>
<s>
The	O
D3100	B-Algorithm
is	O
the	O
only	O
known	O
Nikon	B-Algorithm
DSLR	B-Device
with	O
an	O
image	O
sensor	O
interface	O
integrating	O
analog-to-digital	O
converters	O
not	O
made	O
by	O
Nikon	B-Algorithm
:	O
The	O
result	O
is	O
a	O
dynamic	O
range	O
only	O
at	O
the	O
level	O
of	O
competitors	O
like	O
the	O
(	O
higher	O
priced	O
)	O
Canon	B-Algorithm
EOS	I-Algorithm
600D	I-Algorithm
;	O
lower	O
than	O
other	O
current	O
Nikon	B-Algorithm
DSLRs	B-Device
.	O
</s>
