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Need help shooting a large family group photo
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<blockquote data-quote="WayneF" data-source="post: 222227" data-attributes="member: 12496"><p>I think it is a bad idea. For 1) The 2000 watt halogen lights will be dim compared to the speedlight flash. Shutter speed decimates continuous lights. Also for 2) hot and dangerous on the floor with a crowd.</p><p></p><p>Consider a 1/30 second shutter speed, call that as slow as imaginably bearable. </p><p>This computes 2000 watts x 1/30 second = 67 watt seconds. The SB-910 is more like 75 watt seconds (at 1/200 second). But it is far worse - the incandescent light efficiency (of making light from electricity) is much lower than the flash. The flash is maybe 4 times more efficient than these numbers indicate, 4x more light. You cannot beat flash. <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>Your message is not missing, it is #11 in this thread, first one on page 2.</p></blockquote><p></p>
[QUOTE="WayneF, post: 222227, member: 12496"] I think it is a bad idea. For 1) The 2000 watt halogen lights will be dim compared to the speedlight flash. Shutter speed decimates continuous lights. Also for 2) hot and dangerous on the floor with a crowd. Consider a 1/30 second shutter speed, call that as slow as imaginably bearable. This computes 2000 watts x 1/30 second = 67 watt seconds. The SB-910 is more like 75 watt seconds (at 1/200 second). But it is far worse - the incandescent light efficiency (of making light from electricity) is much lower than the flash. The flash is maybe 4 times more efficient than these numbers indicate, 4x more light. You cannot beat flash. :) Your message is not missing, it is #11 in this thread, first one on page 2. [/QUOTE]
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