78
Technical
Notes
Read
this chapter
for
information
on
compatible
accessories,
cleaning
and
storing
the
camera,
and
what
to
do
if
an
error
mes-
sage
is
displayed or you encounter problems using the camera.
At the
time
of
writing,
the
following accessories were available
for your camera.
Lenses
1
mount
lenses
Mount
Mount
Adapter
FT1
adapters
Power
•
Rechargeable
Li-ion
Battery
EN-EL21
(CD
20-21
):
Additional
sources
EN-EL21
batteries are available
from
local retailers and Nikon-
authorized service representatives.
•
Battery
Charger
MH-28
(CD
20): Recharge
EN-EL21
batteries.
•
Power
Connector
EP-SD,
AC
Adapter
EH-Sb:
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-50
power
connector
is
required
to
connect
the
camera
to
the
EH-5b,
EH-5a,
or
EH-5.
Flash
•
SB-NS:
The
SB-N5
has a Guide
Number
of
8.5/27.9
(m/ft,
ISO
units
1 00, 20
°(/68
oF;
Guide
Number
at
ISO
160
is
1 0.8/35.4). When
mounted
on
the
Nikon
1 V2,
it
supports
i-TTL
and
manual
flash control.
•
SB-N7:
The
SB-N7
has
a Guide Number
of
18/59 (m/ft,
ISO
100,
20
°(/68
oF;
Guide Number at
ISO
160
is
22.8/74.8). When mounted
on the Nikon 1
V2,
it
supports i-TIL and manual flash control.
B
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).
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