Close-Up Flash Photography In Ttl Auto Flash Mode - To Flash On A Very Close Subject - Nikon SB-25 Instruction Manual

Close-Up Flash Photography in TTL Auto Flash Mode — To Flash On
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.).
APPLICABLE NIKON SLR MODELS
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/N6006 FA FG-20
F-601 /N6000 FE2
M
F-401x/N5005 FG
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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
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.
[coefficient]
[f/stop]
[flash-to-subject distance]
A Very Close Subject
For example, to shoot a subject located 0.5 m away with
an ISO 100 film and a wide-flash adapter:
4
[f/stop] = 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
indica- 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.
Chapter
ISO film Speed and coefficient
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.
4
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