Nikon SB-25, Instruction Manual

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Setting Up SB-25
1 Choose position (flash mode selector). Confirm
in the LCD panel.
2 Choose position* (flash sync mode selec-
tor).
* Since TTL Auto Flash operation can be performed regardless of the flash sync
mode selector setting, for simplicity, always leave the switch at this position.
3 Set ISO speed of the film in use. Usable film speeds
are ISO 25 to ISO 400.
For instruction, see “Setting ISO Film Speed (Manual
Adjustment),” pages 27 to 28.
4 Set the built-in zoom head position.
For instruction, see “Setting Zoom-Head Position (Manual
Adjustment),” pages 29 to 30.
Shooting indicator bars
in the LCD panel move as the
figure input changes.
TTL Auto Flash Mode: For F-401/N4004 and F-401s/N4004s Users
Chapter
3
1
Flash mode
selector at
TTL Auto
2
Flash sync mode
selector at NORMAL
3
ISO speed
of film in
use
4
Zoom-head position
7
Aperture
value
Confirming Settings
7 Set aperture in the SB-25’s LCD panel*.
For instruction, see “Setting Aperture Value (Manual
Adjustment),” pages 28 to 29.
In
programmed auto and shutter-priority auto exposure
mode , set an aperture using the “Guide to determine aper-
ture” in the following page.
In
aperture-priority auto or manual exposure mode , set the
aperture value that you have set on the camera (from step 6).
Once aperture is set, indicator bars
show the shooting
distance range for that setting.
* This operation is important for reading the appropriate shooting distance from
the indicator bars (step 8); setting a wrong aperture value on the SB-25 does
not affect all TTL Auto Flash operations — a shot will be taken with the aper-
ture set on the camera.
Setting Up Your Camera
5 Select one of the following exposure modes:
a. Programmed auto (A/S) to perform Programmed
TTL Auto Flash.
b. Shutter-priority auto (S) to perform Programmed
TTL Auto Flash.
c. Aperture-priority auto (A) to perform Standard TTL
Flash.
d. Manual exposure mode to perform Standard TTL
Flash.
6 Perform other settings:
a. For shutter-priority auto , set desired shutter speed*.
b. For aperture-priority auto , set desired aperture.
c. For manual exposure mode , set desired shutter
speed* and aperture.
* Camera automatically shifts to the fastest synchronization speed if you choose
a speed that is not within the synchronization range.
Quick reference on the relationship between
usable apertures and flash shooting distance
Use table on page 142 in this instruction manual.
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