Sony α NEX-3N Instruction Manual page 46

The flash range (approx.)
The range of the flash depends on the ISO sensitivity and aperture value.
ISO 200
ISO 3200
Notes
• When attaching a 16-50 mm/F3.5-5.6 lens (supplied), the flash may be blocked off
for a wide angle. Move the focal length of the lens slightly more to the tele side,
and shoot from a distance.
GB
46
F2.8
1 m – 2.1 m
(3.3 feet – 6.9 feet)
4 m – 8.4 m
(13.3 feet – 27.7 feet)
F3.5
1 m – 1.7 m
(3.3 feet – 5.5 feet)
3.2 m – 6.8 m
(10.6 feet – 22.1 feet)
F5.6
1 m – 1.1 m
(3.3 feet – 3.5 feet)
2 m – 4.2 m
(6.6 feet – 13.8 feet)