Nikon 4799 F6 Instruction Manual - Page 161

Flash units made by manufacturers other than Nikon, Notes on using the optional Speedlight

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Flash units made by manufacturers other than Nikon Use only Nikon Speedlights. Other units may damage the camera's electrical circuit due to incompatible voltage requirements (not compatible with 250V or higher), electric contact alignment or switch phase. Notes on using the optional Speedlight • See your Speedlight manual for details. • If the camera groups are defined in the Speedlight manual under CLS, see that section for camera groups compatible with CLS. • If the camera groups are defined in the non-CLS supporting Speedlight manual under TTL auto flash, see that section for camera group I. • With the SB-26, 25 or 24, flash sync mode set on the Speedlight overrides the setting on the camera body. However with the SB-26, Red-Eye Reduction or RedEye Reduction with Slow Sync setting on the camera overrides Speedlight setting. • The flash sync speed is 1/250 sec. or slower when using an optional Speedlight. (With Medical-Nikkor 120mm f/4, set the shutter speed to 1/125 sec. or slower.) • Available film speeds for TTL auto flash are ISO 25 to ISO 1000. • For Speedlights not compatible with the Wide-Area AF-Assist Illuminator, the AF- Assist Illuminator does not emit light under the following conditions: • Center focus area is not selected in Single Area AF or Dynamic AF mode. • A group of focus areas that does not include the center focus area is selected in Group Dynamic AF mode • In Programmed Auto exposure mode, the camera automatically controls the maximum available aperture in relation to the film speed as follows: ISO film speed 25 50 100 200 400 800 1000 Maximum available aperture 2.8 3.3 4 4.8 5.6 6.7 7.1 * When film speed increases by one step, the maximum available aperture is stopped down by 1/2 f/stop. If you are using a lens with a maximum aperture smaller than that listed above, the automatically controlled aperture range is from the lens' maximum to minimum aperture. • When flash exposure compensation is set, = appears in the viewfinder without the compensation value. Flash Photography 161

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161
Flash Photography
Flash units made by manufacturers other than Nikon
Use only Nikon Speedlights. Other units may damage the camera
’
s electrical circuit
due to incompatible voltage requirements (not compatible with 250V or higher),
electric contact alignment or switch phase.
Notes on using the optional Speedlight
•
See your Speedlight manual for details.
•
If the camera groups are defined in the Speedlight manual under CLS, see that
section for camera groups compatible with CLS.
•
If the camera groups are defined in the non-CLS supporting Speedlight manual
under TTL auto flash, see that section for camera group
I
.
•
With the SB-26, 25 or 24, flash sync mode set on the Speedlight overrides the
setting on the camera body. However with the SB-26, Red-Eye Reduction or Red-
Eye Reduction with Slow Sync setting on the camera overrides Speedlight setting.
•
The flash sync speed is 1/250 sec. or slower when using an optional Speedlight.
(With Medical-Nikkor 120mm f/4, set the shutter speed to 1/125 sec. or slower.)
•
Available film speeds for TTL auto flash are ISO 25 to ISO 1000.
•
For Speedlights not compatible with the Wide-Area AF-Assist Illuminator, the AF-
Assist Illuminator does not emit light under the following conditions:
•
Center focus area is not selected in Single Area AF or Dynamic AF mode.
•
A group of focus areas that does not include the center focus area is selected in
Group Dynamic AF mode
•
In Programmed Auto exposure mode, the camera automatically controls the
maximum available aperture in relation to the film speed as follows:
ISO film speed
25
50
100
200
400
800
1000
Maximum available aperture
2.8
3.3
4
4.8
5.6
6.7
7.1
*When film speed increases by one step, the maximum available aperture is stopped
down by 1/2 f/stop. If you are using a lens with a maximum aperture smaller than
that listed above, the automatically controlled aperture range is from the lens
’
maximum to minimum aperture.
•
When flash exposure compensation is set,
=
appears in the viewfinder without the
compensation value.