125
124
Chapter
4
Close-Up Flash Photography in TTL Auto Flash Mode — To Flash On A Very Close Subject
Optional TTL Remote Cord SC-17 or SC-24 lets you perform
TTL Auto Flash shooting on a subject closer than 0.6m (2 ft.).
Hints and Notes
• Connect the SB-25 to the camera, using the SC-17 or
SC-24*.
* Used for F4-Series with the DW-20 or DW-21 attached.
• Position the SB-25 so light from the head covers the sub-
ject.
• Mount the built-in flash adapter.
The zoom-head position is automatically adjusted.
Confirm the LCD panel shows
with
indica-
tion.
• Use aperture-priority auto or manual exposure mode.
• Choose
position (flash mode selector) for TTL Auto
Flash operation.
For further instruction, see the
TTL Auto Flash Mode
section relating to your camera type.
• Determine the aperture or f/stop value using the following
equation and chart, then set on the lens. The SB-25’s LCD
panel cannot be used to compute shooting distance.
[f/stop]
≥
[coefficient]
[flash-to-subject distance]
For example, to shoot a subject located 0.5 m away with
an ISO 100 film and a wide-flash adapter:
[f/stop]
≥
4
= 8
0.5
You can then use an aperture of f/8 or smaller (a larger f-
number). As far as conditions allow, you should choose
the smallest aperture (as large an f-number) possible.
• With a very light- or dark-toned subject, take additional
shots with other exposure compensation conditions to
ensure a correct exposure.
See “Flash Exposure Compensation” on pages 106 and
107, and “Exposure Compensation with Camera’s Dial” on
pages 108 and 109.
ISO film speed
100 or lower
125 — 400
500 or higher
Coefficient*
4 (14)
8 (26)
11 (36)
* Numbers in parentheses ( ) represents coefficients for foot measurement
system.
ISO film Speed and coefficient
F90-Series/N90
✗
F-501/N2020
✗
Nikonos V
F4-Series
✗
F-301/N2000
✗
F3-Series
F-801/N8008
✗
F-401/N4004
✗
F2-Series
F-801s/N8008s
✗
F-401s/N4004s
✗
FM2
F-601
M
/N6000
✗
FE2
✗
F-401x/N5005
✗
FG
✗
F-601/N6006
✗
FA
✗
FG-20
APPLICABLE NIKON SLR MODELS
SB-25_En 03.1.14 8:18 PM Page 124
Summary of Contents for SB-25
Page 1: ...Instruction Manual E Autofocus Speedlight 25_En 03 1 14 8 18 PM Page 1 ...
Page 4: ...Chapter 1 Introducing the SB 25 Autofocus Speedlight 25_En 03 1 14 8 18 PM Page 6 ...
Page 10: ...Chapter 2 Before Flash Shooting 25_En 03 1 14 8 18 PM Page 18 ...
Page 49: ...Chapter 4 Flash Shooting Applications 25_En 03 1 14 8 18 PM Page 96 ...