Nikon SB-80DX - Manual (Page 72)

72
l
Setting the aperture
m Calculate the aperture by using this equation and table. Setting a smaller
aperture than the one obtained from the equation is recommended.
f/stop
≥
Coefficient ÷ Flash-to-subject distance
m For example, with a subject 0.5m (1.6 ft) away using an ISO sensitivity of 100
and with the wide-flash adapter in place, the suggested aperture is:
f/stop
≥
2 ÷ 0.5 = 4 (in meters)
f/stop
≥
6.6 ÷ 1.6 = approx. 4 (in feet)
Therefore, you should use at least f/4 or an even smaller aperture, such as
f/5.6 or f/8.
l
Setting the built-in wide-flash adapter and adjusting the
zoom-head position
1 Slowly pull out the wide-flash adapter all the way,
and position it over the flash head. Then slide
the bounce card back into place inside the flash
head.
2 Press the
c
or
d
button to adjust the zoom-
head position to 14mm or 17mm.
nWhen the wide-flash adapter is set on the flash head,
the power zoom function becomes inactive and the
zoom-head position is adjusted to 14mm or 17mm.
nTo slide the wide-flash adapter back into place, raise
it and push it into the flash head as far as it will go.
ISO sensitivity 25 50 100 200 400 800 1000
Coefficient (m/ft) 1.4/4.6 2/6.6 2/6.6 4/13 4/13 5.6/18 5.6/18
Close-up flash operation