<s>
The	O
Panasonic	B-Device
Lumix	I-Device
DMC-GH2	I-Device
is	O
a	O
digital	O
camera	O
with	O
HD	O
video	O
recording	O
capability	O
that	O
is	O
part	O
of	O
the	O
Micro	B-Operating_System
Four	I-Operating_System
Thirds	I-Operating_System
system	I-Operating_System
.	O
</s>
<s>
Though	O
commonly	O
referred	O
to	O
as	O
a	O
DSLR	O
(	O
digital	O
single-lens	O
reflex	O
)	O
camera	O
,	O
it	O
has	O
no	O
mirror	O
or	O
optical	O
viewfinder	O
,	O
but	O
has	O
instead	O
both	O
a	O
fold-out	O
LCD	B-Device
screen	I-Device
and	O
a	O
(	O
somewhat	O
higher	O
resolution	O
)	O
electronic	O
viewfinder	O
.	O
</s>
<s>
The	O
DMC-GH2	B-Device
can	O
record	O
video	O
at	O
up	O
to	O
HD	O
1080P	O
at	O
24	O
fps	O
.	O
</s>
<s>
The	O
GH2	O
was	O
released	O
in	O
October	O
2010	O
as	O
a	O
successor	O
to	O
the	O
Panasonic	B-Device
Lumix	I-Device
DMC-GH1	I-Device
.	O
</s>
<s>
The	O
Micro	B-Operating_System
Four	I-Operating_System
Thirds	I-Operating_System
system	I-Operating_System
(	O
with	O
its	O
crop	O
factor	O
of	O
2	O
when	O
compared	O
to	O
35mm	O
still	O
)	O
does	O
not	O
offer	O
the	O
degree	O
of	O
shallow-focus	O
effects	O
possible	O
with	O
full-frame	O
cameras	O
.	O
</s>
<s>
Micro	B-Operating_System
Four	I-Operating_System
Thirds	I-Operating_System
has	O
the	O
same	O
sensor	O
size	O
as	O
the	O
Four	B-Architecture
Thirds	I-Architecture
System	I-Architecture
but	O
replaces	O
the	O
complex	O
optical	O
path	O
needed	O
for	O
the	O
optical	O
viewfinder	O
with	O
an	O
electronic	O
viewfinder	O
displaying	O
a	O
live	B-Device
view	I-Device
;	O
this	O
allows	O
for	O
smaller	O
and	O
lighter	O
lenses	O
and	O
bodies	O
.	O
</s>
<s>
The	O
Micro	B-Operating_System
Four	I-Operating_System
Thirds	I-Operating_System
sensor	O
has	O
about	O
a	O
quarter	O
the	O
area	O
of	O
a	O
35	O
mm	O
stills	O
frame	O
,	O
giving	O
a	O
crop	O
factor	O
of	O
about	O
two	O
,	O
so	O
that	O
a	O
"	O
standard	O
lens	O
"	O
may	O
be	O
regarded	O
as	O
around	O
25mm	O
focal	O
length	O
.	O
</s>
<s>
While	O
the	O
sensor	O
is	O
the	O
same	O
size	O
as	O
the	O
Four	B-Architecture
Thirds	I-Architecture
system	I-Architecture
,	O
the	O
flange	O
to	O
sensor	O
distance	O
is	O
much	O
shorter	O
,	O
which	O
as	O
well	O
as	O
allowing	O
small	O
camera	O
size	O
,	O
means	O
that	O
a	O
great	O
variety	O
of	O
camera	O
lenses	O
can	O
be	O
used	O
with	O
an	O
appropriate	O
adapter	O
.	O
</s>
<s>
The	O
Panasonic	B-Device
GH2	I-Device
is	O
compatible	O
with	O
the	O
full	O
range	O
of	O
Micro	B-Operating_System
Four	I-Operating_System
Thirds	I-Operating_System
system	I-Operating_System
lenses	O
including	O
:	O
</s>
<s>
Panasonic	B-Device
Lumix	I-Device
G	O
14	O
–	O
42mm	O
ƒ/3.5	O
-5.6	O
Aspheric	O
O.I.S.	O
</s>
<s>
Panasonic	B-Device
Lumix	I-Device
GX	O
Vario	O
PZ	O
14	O
–	O
42mm	O
ƒ/3.5	O
-5.6	O
Aspheric	O
Power	O
O.I.S.	O
</s>
<s>
Panasonic	B-Device
Lumix	I-Device
G	O
Vario	O
14	O
–	O
45mm	O
ƒ/3.5	O
–	O
5.6	O
lens	O
O.I.S.	O
</s>
<s>
Panasonic	B-Device
Lumix	I-Device
GX	O
Vario	O
PZ	O
45-175mm	O
ƒ/4	O
-5.6	O
Aspheric	O
Power	O
O.I.S.	O
</s>
<s>
Panasonic	B-Device
Lumix	I-Device
G	O
HD	O
100	O
–	O
300mm	O
f/4	O
,	O
0-5	O
,	O
6	O
O.I.S.	O
</s>
<s>
Panasonic	B-Device
Lumix	I-Device
G	O
8mm	O
ƒ/3.5	O
fisheye	O
lens	O
with	O
a	O
180°	O
field	O
of	O
view	O
.	O
</s>
<s>
Four	B-Architecture
Thirds	I-Architecture
System	I-Architecture
lenses	O
(	O
Four	O
variations	O
of	O
this	O
adapter	O
exist	O
.	O
)	O
</s>
<s>
Panasonic	O
released	O
firmware	B-Application
version	O
1.1	O
in	O
October	O
2011	O
,	O
with	O
a	O
"	O
compatibility	O
update	O
for	O
new	O
Panasonic	O
X	O
class	O
lenses	O
with	O
power	O
zoom	O
(	O
PZ	O
)	O
feature	O
"	O
which	O
enabled	O
the	O
following	O
with	O
them	O
:	O
display	O
of	O
the	O
local	O
length	O
,	O
step	O
zoom	O
,	O
zoom	O
resume	O
,	O
and	O
selectable	O
zoom	O
speed	O
;	O
and	O
a	O
number	O
of	O
other	O
new	O
features	O
and	O
improvements	O
.	O
</s>
<s>
Non-Panasonic	O
modifications	O
to	O
the	O
camera	O
's	O
firmware	B-Application
,	O
often	O
referred	O
to	O
as	O
hacks	O
,	O
have	O
been	O
developed	O
and	O
posted	O
on	O
the	O
Internet	O
.	O
</s>
<s>
The	O
firmware	B-Application
modifications	O
offer	O
the	O
following	O
functionality	O
:	O
</s>
<s>
Reportedly	O
,	O
these	O
firmware	B-Application
modifications	O
do	O
not	O
enhance	O
still	O
shots	O
from	O
the	O
camera	O
,	O
although	O
it	O
has	O
been	O
reported	O
there	O
is	O
the	O
possibility	O
that	O
a	O
future	O
firmware	B-Application
release	O
could	O
enhance	O
stills	O
features	O
and	O
performance	O
.	O
</s>
<s>
Modifying	O
a	O
camera	O
with	O
third	O
party	O
firmware	B-Application
is	O
potentially	O
risky	O
.	O
</s>
<s>
An	O
incorrect	O
application	O
of	O
the	O
third	O
party	O
firmware	B-Application
could	O
render	O
the	O
camera	O
inoperative	O
.	O
</s>
<s>
One	O
such	O
third-party	O
firmware	B-Application
modification	O
is	O
PTool	O
.	O
</s>
