Nikon 1 V2 User Manual page 80

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).