<s>
Nocticron	B-Device
( „	O
Night-time	O
“	O
from	O
latin	O
nox	O
,	O
noctis	O
„night	O
“	O
and	O
ancient	O
Greek	O
kronos	O
„time	O
“	O
)	O
is	O
the	O
brand	O
name	O
of	O
Leica	O
lenses	O
with	O
an	O
extreme	O
speed	O
of	O
f/1.2	O
.	O
</s>
<s>
Because	O
of	O
the	O
large	O
aperture	B-General_Concept
size	O
and	O
its	O
image	O
stabilisation	O
system	O
it	O
is	O
possible	O
to	O
take	O
images	O
with	O
relatively	O
short	O
exposure	O
time	O
especially	O
in	O
available	O
light	O
situations	O
.	O
</s>
<s>
Nocticron	B-Device
lenses	O
are	O
slower	O
than	O
Noctilux	O
lenses	O
(	O
f/0	O
,	O
95	O
or	O
f/1	O
,	O
0	O
)	O
and	O
faster	O
than	O
the	O
Leica-lenses	O
with	O
the	O
brand	O
name	O
Summilux	O
(	O
f/1	O
,	O
4	O
)	O
,	O
Summicron	O
(	O
f/2	O
,	O
0	O
)	O
and	O
Elmarit	O
(	O
f/2	O
,	O
8	O
)	O
.	O
</s>
<s>
Nocticron	B-Device
prime	O
lenses	O
are	O
offered	O
as	O
exchangeable	O
lenses	O
for	O
the	O
Micro	B-Operating_System
Four	I-Operating_System
Thirds	I-Operating_System
system	I-Operating_System
(	O
MFT	B-Operating_System
)	O
.	O
</s>
<s>
At	O
photokina	O
2012	O
the	O
model	O
Lumix	O
Leica	O
DG	O
Nocticron	B-Device
1:1	O
,	O
2/42.5	O
mm	O
ASPH	O
was	O
announced	O
,	O
and	O
it	O
is	O
available	O
since	O
2014	O
.	O
</s>
<s>
The	O
lens	O
has	O
a	O
focussing	O
as	O
well	O
as	O
an	O
aperture	B-General_Concept
ring	O
,	O
it	O
is	O
relatively	O
large	O
and	O
heavy	O
,	O
and	O
it	O
is	O
not	O
water	O
or	O
dust	O
proof	O
.	O
</s>
<s>
The	O
anti-reflective	O
coating	O
of	O
the	O
telephoto	O
lens	O
with	O
1.7	O
times	O
normal	O
focal	B-Algorithm
length	I-Algorithm
has	O
14	O
lenses	O
in	O
11	O
groups	O
,	O
two	O
of	O
them	O
aspheric	O
and	O
another	O
with	O
extremely	O
low	O
dispersion	O
.	O
</s>
<s>
The	O
Nocticron	B-Device
has	O
an	O
excellent	O
image	O
quality	O
.	O
</s>
<s>
The	O
Nocticron	B-Device
lenses	O
allow	O
a	O
fast	O
lens-body	O
communication	O
for	O
autofocussing	O
with	O
its	O
rather	O
silent	O
stepper	O
motor	O
,	O
due	O
to	O
the	O
large	O
aperture	B-General_Concept
size	O
also	O
at	O
low	O
light	O
conditions	O
.	O
</s>
<s>
The	O
‘’	O
Dual	O
I.S.	O
’’	O
mode	O
can	O
be	O
used	O
only	O
if	O
the	O
firmware	O
of	O
the	O
Nocticron	B-Device
has	O
version	O
1.2	O
or	O
higher	O
.	O
</s>
<s>
The	O
following	O
images	O
show	O
some	O
extraordinary	O
capabilities	O
of	O
the	O
Nocticron	B-Device
such	O
as	O
at	O
low	O
light	O
,	O
at	O
high	O
speed	O
,	O
for	O
strong	O
bokeh	O
or	O
with	O
image	O
stabilisation	O
.	O
</s>
<s>
Compared	O
to	O
other	O
camera	O
systems	O
with	O
differing	O
normal	O
focal	B-Algorithm
lengths	I-Algorithm
,	O
and	O
therefore	O
different	O
image	B-Algorithm
sensor	I-Algorithm
sizes	I-Algorithm
,	O
the	O
following	O
equivalent	O
values	O
apply	O
to	O
lenses	O
with	O
appropriate	O
properties	O
as	O
the	O
Nocticron	B-Device
42	O
,	O
5	O
mm	O
1	O
,	O
2	O
within	O
the	O
Micro-Four-Thirds	O
system	O
(	O
MFT	B-Operating_System
)	O
.	O
</s>
