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<blockquote data-quote="WayneF" data-source="post: 275691" data-attributes="member: 12496">The camera internal flash serves two functions, a conventional flash unit,&nbsp; and/or a Commander to control remote units.Used as Commander, it MUST STILL FLASH COMMAND SIGNALS to the remote flashes.&nbsp; These occur just BEFORE the shutter opens and will not affect your exposure (they can cause human subjects to blink however).&nbsp; But unless disabled, the internal flash will also serve as a conventional flash unit, and CAN CONTRIBUTE to your exposure. Each group is controllable.&nbsp; The Commander menu has a group for the builtin flash.&nbsp; You can change the MODE of that internal group to be &quot;- -&quot; which is OFF, and then it will not contribute light into the picture.&nbsp; The commander still must flash commands to the remote units however.Said another way:If Commander mode is selected and the internal flash door is open,then IT WILL FLASH commands to the remotes (before shutter opens).If the Commander menu for the INTERNAL GROUP IS NOT &quot;- -&quot;, then IT WILL ALSO contribute light into your picture.More at <a href="http://www.scantips.com/lights/awl.html" target="_blank">Using the Nikon CLS Remote Wireless Flash System</a></blockquote>

[QUOTE="WayneF, post: 275691, member: 12496"] The camera internal flash serves two functions, a conventional flash unit, and/or a Commander to control remote units. Used as Commander, it MUST STILL FLASH COMMAND SIGNALS to the remote flashes. These occur just BEFORE the shutter opens and will not affect your exposure (they can cause human subjects to blink however). But unless disabled, the internal flash will also serve as a conventional flash unit, and CAN CONTRIBUTE to your exposure. Each group is controllable. The Commander menu has a group for the builtin flash. You can change the MODE of that internal group to be "- -" which is OFF, and then it will not contribute light into the picture. The commander still must flash commands to the remote units however. Said another way: If Commander mode is selected and the internal flash door is open, then IT WILL FLASH commands to the remotes (before shutter opens). If the Commander menu for the INTERNAL GROUP IS NOT "- -", then IT WILL ALSO contribute light into your picture. More at [URL="http://www.scantips.com/lights/awl.html"]Using the Nikon CLS Remote Wireless Flash System[/URL] [/QUOTE]

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