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<blockquote data-quote="WayneF" data-source="post: 223787" data-attributes="member: 12496">Actually, the only option in the SB-700 commander is that all three groups (internal and two remotes A &amp; B) have to all be the same mode.&nbsp; Mode can be TTL or Manual, but there is one menu shared by all three.&nbsp; Whereas the other commanders allow a different mode in each group.Manual flash (set in the Commander menu) should not cause blinking.&nbsp; There is no flashed command requesting preflash, and no preflash to be metered.&nbsp; Manual already knows flash power level, specified in the Commander menu.There is a command immediately before shutter opens, which is to tell the remote TTL or Manual flash their power level, but this is very close to the time of opening shutter, and the short delay is not known to cause a blinking problem.&nbsp; Not like TTL does.My notion is that diffuser simply cannot do anything useful for you.&nbsp; A tiny 2 inch diffuser does absolutely nothing on 10 or 20 foot group.&nbsp;&nbsp; All it can do is reduce your effective flash power.</blockquote>

[QUOTE="WayneF, post: 223787, member: 12496"] Actually, the only option in the SB-700 commander is that all three groups (internal and two remotes A & B) have to all be the same mode. Mode can be TTL or Manual, but there is one menu shared by all three. Whereas the other commanders allow a different mode in each group. Manual flash (set in the Commander menu) should not cause blinking. There is no flashed command requesting preflash, and no preflash to be metered. Manual already knows flash power level, specified in the Commander menu. There is a command immediately before shutter opens, which is to tell the remote TTL or Manual flash their power level, but this is very close to the time of opening shutter, and the short delay is not known to cause a blinking problem. Not like TTL does. My notion is that diffuser simply cannot do anything useful for you. A tiny 2 inch diffuser does absolutely nothing on 10 or 20 foot group. All it can do is reduce your effective flash power. [/QUOTE]

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