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Can 2 AF assist lamps be used at the same time? (on camera & off camera ext' flash)
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<blockquote data-quote="WayneF" data-source="post: 377358" data-attributes="member: 12496"><p><strong>Re: Can 2 AF assist lamps be used at the same time? (on camera & off camera ext' flas</strong></p><p></p><p>That is sounding good. Nissin is a good name, and the Nissin manual is at <a href="http://www.nissindigital.com/files/EN_DI600_rev_1_1.pdf" target="_blank">http://www.nissindigital.com/files/EN_DI600_rev_1_1.pdf</a> and page 21 has the Guide Number chart. Says GN at 24mm ISO 100 is 25 (meters) which is x3.28 = GN 78.7 for feet. ISO 400 values would be 2x the ISO 100 chart numbers. </p><p>At 24mm, that is about 1/3 stop more power than the SB-400.</p><p>But it also zooms, brighter if zoomed longer (see chart), It should zoom automatically to follow the lens zoom. The SB-400 did not. And it rotates too.</p><p></p><p>The on-flash EV is compensation for TTL. The camera also provides Flash Compensation. Use either, but the two should add to a final value if you use both. So don't forget the other is on too. <img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" class="smilie smilie--sprite smilie--sprite1" alt=":)" title="Smile :)" loading="lazy" data-shortname=":)" /></p><p></p><p>My experience is if you get the flash compensation about right on the first picture, then we can walk around in the room for more without paying much more close attention, same situation, same compensation. It's not all that hard. And the room should be the same tomorrow or next week too. <img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" class="smilie smilie--sprite smilie--sprite1" alt=":)" title="Smile :)" loading="lazy" data-shortname=":)" /></p><p></p><p>The pullout diffuser is only for wider coverage of direct flash of lenses wider than 24mm minimum zoom. Says 14mm. This dispersion spread reduces the brightness considerably, so you do not want it routinely. Probably never for bounce, even with a 14mm lens. The bounce path is already wider, it goes farther and spreads more (than direct flash). If then with a 14mm lens, if your room view shows darker corners, then maybe the pull out diffuser.</p><p></p><p>Bounce card only for bounce. This gives a little direct forward fill, and maybe most importantly, provides a sparkling catchlight in the subjects eyes... which adds vitality. Pay attention to the closeups of the desk anchors on your TV news... </p><p> Just don't over do the bounce card. <img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" class="smilie smilie--sprite smilie--sprite1" alt=":)" title="Smile :)" loading="lazy" data-shortname=":)" /> Meaning - You will often see the cards direct shadow (typically under horizontal features). You should also see ceiling bounce shadows too (under things, like chins or collars). Don't let the direct shadow obliterate the ceiling shadows. The card is meant to be fill, not a direct main light. If up closer, you can pull the card only half way out. Do what you see you need to do.</p><p></p><p>Don't stand too close for bounce. Maybe six feet anyway, for a little better angle in to the face from the ceiling above. Zoom in all you want, but don't stand too close.</p></blockquote><p></p>
[QUOTE="WayneF, post: 377358, member: 12496"] [b]Re: Can 2 AF assist lamps be used at the same time? (on camera & off camera ext' flas[/b] That is sounding good. Nissin is a good name, and the Nissin manual is at [URL]http://www.nissindigital.com/files/EN_DI600_rev_1_1.pdf[/URL] and page 21 has the Guide Number chart. Says GN at 24mm ISO 100 is 25 (meters) which is x3.28 = GN 78.7 for feet. ISO 400 values would be 2x the ISO 100 chart numbers. At 24mm, that is about 1/3 stop more power than the SB-400. But it also zooms, brighter if zoomed longer (see chart), It should zoom automatically to follow the lens zoom. The SB-400 did not. And it rotates too. The on-flash EV is compensation for TTL. The camera also provides Flash Compensation. Use either, but the two should add to a final value if you use both. So don't forget the other is on too. :) My experience is if you get the flash compensation about right on the first picture, then we can walk around in the room for more without paying much more close attention, same situation, same compensation. It's not all that hard. And the room should be the same tomorrow or next week too. :) The pullout diffuser is only for wider coverage of direct flash of lenses wider than 24mm minimum zoom. Says 14mm. This dispersion spread reduces the brightness considerably, so you do not want it routinely. Probably never for bounce, even with a 14mm lens. The bounce path is already wider, it goes farther and spreads more (than direct flash). If then with a 14mm lens, if your room view shows darker corners, then maybe the pull out diffuser. Bounce card only for bounce. This gives a little direct forward fill, and maybe most importantly, provides a sparkling catchlight in the subjects eyes... which adds vitality. Pay attention to the closeups of the desk anchors on your TV news... Just don't over do the bounce card. :) Meaning - You will often see the cards direct shadow (typically under horizontal features). You should also see ceiling bounce shadows too (under things, like chins or collars). Don't let the direct shadow obliterate the ceiling shadows. The card is meant to be fill, not a direct main light. If up closer, you can pull the card only half way out. Do what you see you need to do. Don't stand too close for bounce. Maybe six feet anyway, for a little better angle in to the face from the ceiling above. Zoom in all you want, but don't stand too close. [/QUOTE]
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Can 2 AF assist lamps be used at the same time? (on camera & off camera ext' flash)
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