44
SB-N5:
The
SB-N5
has
a Guide
Number
of
8.5/27.9 (m/ft,
ISO
1
00,
20
°(/68
oF;
Guide
Number
at
ISO
200
is
12/39.4).
When
mounted
on
the
Nikon 1
V1,
it
supports i-TTL and
manual flash control.
8
Guide
Number
To
calculate
the
range
of
the
flash at full power, divide
the
Guide
Number
by
the
aperture.
For
example, at
ISO
100
the
SB-N5
has
a Guide
Number
of
8.5
m or 27.9
ft
(35
mm
zoom
head position); its range at
an
aperture
of
f/5.6
is
8.5-;-5.6
or
about
1.5
meters (or in feet, 27.9-;-5.6=approximately 5 ft).
For
each
twofold
increase in
ISO
sensitivity,
multiply
the
Guide
Number
by
the
square root
of
two
(approximately
1.4).
Power
sources
•
Rechargeable
Li-ion
Battery
EN-EL
15
(CIJ
69):
Additional
EN-EL
15
batteries
are
available
from
local retailers and
Nikon-
authorized service representatives.
-~~~
•
Battery
Charger
MH-25
(CIJ
69): Recharge
EN-EL
15
batteries.
1·
Power
Connector
EP-58,
AC
Adapter
EH-5b:
These accessories
can be used
to
power
the
camera for extended periods
(EH-5a
and
EH-5
AC
adapters can also be used). An
EP-58
power
connector
is
required
to
connect
the
camera
to
he EH-5b,
EH-5a,
or
EH-5;
see
page 48 for details.
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