Nikon 1799 instruction manual Flash units made by manufacturers other than Nikon, 161

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.

Flash Photography

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