Nikon SB-27 - Manual (Page 42)

Flash operation in Manual (M) mode
(For
42
With the SB-27's flash mode selector set to “M,” light output
can be manually controlled.
—Indicator bar “¡” in the LCD panel shows the approximate flash shooting
distance range. To determine the correct aperture value, see page 46 on
“Guide numbers for determining the correct aperture.”
1
Set the camera's exposure mode to aperture-priority
auto (A) or manual (M).
ISO
SLOW
REAR S
2
Set the SB-27's flash mode selector to “M”.
TTL
A
M
M
ZOOM
ISO
mm
f t m
60
30
15
7
4
2
18
9
4
2
1
0.6
In Manual (M) mode, confirm that the ƒ indicator appears in
the LCD panel.
F90X/N90s LCD panel shown