Here are few steps to configure your SB-800 flash unit as a Master Flash Unit. If you are looking for how to configure SB-900 and SB-600 flash units in wireless mode, here are the links for Setting the SB-900 as a Master Speedlight Unit and How to set SB600 flash to work in Commander MODE.
1. With the unit on, press and hold SEL for two seconds. The display will change.
2. Locate the shaded box and use the toggle to highlight (The wireless symbol).
3. Press SEL for one second. The one up arrow will change to two arrows (up and down) and the OFF selection on the right will become shaded.
4. Scroll down and select MASTER by highlighting it and pressing SEL for two seconds. The display will change to the Master view.
5. Press SEL to highlight “M”. By pressing “+/–” you can change the flash output compensation value for the “M” group. Pressing MODE while a group (M, A, B or C) is highlighted will change how the Speedlights in that group will react.
TTL – Through the lens metering
A – Auto Aperture
M – Manual
- – No light output (although in M – - a preflash will occur)

Press SEL to jump from group M to A to B to C. Set the amount of flash output compensation for each group using “+/–” as you go.
6. Use SEL to highlight “CH” and use “+/–” to select the channel you will be working in. (There are 4 channels, this allows multiple photographers using the Nikon Creative Lighting System to control only their own Speedlights.)
Note: The channel you choose for the Master Speedlight must be the same channel the remote units are set to.
7. Attach the Master Speedlight to your camera.

Source: A Hands-on Guide to Creative Lighting by Nikon School
Related posts
- Setting the SB-800 as a “Wireless Remote Unit”
- Setting the SB-900 as a “Master Speedlight Unit”
- Setting the SB-900 as a “Wireless Remote Unit”
- Nikon Wireless Speedlight Commander SU-800
- How to set SB600 Flash to work in Commander Mode
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