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<blockquote data-quote="WayneF" data-source="post: 230247" data-attributes="member: 12496">Well, the reason I asked is you cannot set the remote flash to 1/2 power and the internal flash to 1/4 power, and then call that one stop difference.&nbsp;&nbsp; Two reasons...&nbsp; It has to be metered at the subject, flash distance is a factor.&nbsp;&nbsp; But even if equal distance, the SB-700 flash power is well more than the internal flash full power.&nbsp; &nbsp; 1/4 power means different things to them.&nbsp;&nbsp; Adjusting them by eye, I would say you need slightly more fill level.&nbsp; Not to obliterate shadows, but to lighten them a bit, just a bit.&nbsp; &nbsp; If you obliterate them, you are back to bare direct frontal flash.Here is a &quot;white towel&quot; method to judge exposure without a meter.&nbsp; Not something you want to do every time, but doing it at first guides your next sessions of similar lighting also.<a href="http://super.nova.org/DPR/WhiteTowelRatios/" target="_blank">Chuck Gardner's White Towel Exposure Method</a>I don't think GN mode is offered off camera - it does not know ISO and aperture then.&nbsp; You could compute it manually from the GN chart in manual.There would be complications even if using GN mode.&nbsp; It will adjust power for a proper exposure, but it does not know you are going to add the fill light which adds more light.&nbsp; The sum of two is more than the brightest one.&nbsp; So adding fill means you would have to reduce exposure by 1/3 or 2/3 stop.&nbsp; If both lights were equal (at the subject), that would be 2x or&nbsp; one stop more.&nbsp; So, even if using a light meter, we meter each light individually for the ratio, and then meter both lights together for the exposure.&nbsp; Generally, adding fill has to be 1/3 or 2/3 stop more light, less exposure.Get a white umbrella with a black cover.&nbsp; The black cover is used for reflected, to prevent rear spill. The black cover is simply removed for any shoot through use, so it works both ways, you have both.&nbsp;&nbsp; Shoot through puts 2/3 of the power out the back (reflected), so it needs to used very close.&nbsp; If not very close, there would no reason not to use reflected.See <a href="http://www.scantips.com/lights/umbrellas2.html" target="_blank">Mounting Speedights in Umbrellas</a>&nbsp;&nbsp; for more, and about mounting brackets, etc.&nbsp; &nbsp; I would suggest the Smith Victor two umbrella kit there, it's very good.I saw your posting about internal flash troubles, but sorry, I simply don't know.&nbsp; Not working right, it sounds like it needs repair.</blockquote>

[QUOTE="WayneF, post: 230247, member: 12496"] Well, the reason I asked is you cannot set the remote flash to 1/2 power and the internal flash to 1/4 power, and then call that one stop difference. Two reasons... It has to be metered at the subject, flash distance is a factor. But even if equal distance, the SB-700 flash power is well more than the internal flash full power. 1/4 power means different things to them. Adjusting them by eye, I would say you need slightly more fill level. Not to obliterate shadows, but to lighten them a bit, just a bit. If you obliterate them, you are back to bare direct frontal flash. Here is a "white towel" method to judge exposure without a meter. Not something you want to do every time, but doing it at first guides your next sessions of similar lighting also. [URL="http://super.nova.org/DPR/WhiteTowelRatios/"]Chuck Gardner's White Towel Exposure Method[/URL] I don't think GN mode is offered off camera - it does not know ISO and aperture then. You could compute it manually from the GN chart in manual. There would be complications even if using GN mode. It will adjust power for a proper exposure, but it does not know you are going to add the fill light which adds more light. The sum of two is more than the brightest one. So adding fill means you would have to reduce exposure by 1/3 or 2/3 stop. If both lights were equal (at the subject), that would be 2x or one stop more. So, even if using a light meter, we meter each light individually for the ratio, and then meter both lights together for the exposure. Generally, adding fill has to be 1/3 or 2/3 stop more light, less exposure. Get a white umbrella with a black cover. The black cover is used for reflected, to prevent rear spill. The black cover is simply removed for any shoot through use, so it works both ways, you have both. Shoot through puts 2/3 of the power out the back (reflected), so it needs to used very close. If not very close, there would no reason not to use reflected. See [URL="http://www.scantips.com/lights/umbrellas2.html"]Mounting Speedights in Umbrellas[/URL] for more, and about mounting brackets, etc. I would suggest the Smith Victor two umbrella kit there, it's very good. I saw your posting about internal flash troubles, but sorry, I simply don't know. Not working right, it sounds like it needs repair. [/QUOTE]

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