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Author Topic: flash output: profoto d4 vs elinchrom 404  (Read 3578 times)

tmx3

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flash output: profoto d4 vs elinchrom 404
« on: December 23, 2008, 11:22:19 AM »

I was wondering how powerful the D4 is (rated at 4800J) having used the 404 (rated at 4000j) quiet a bit. I understand you cannot compare packs directly on their power as you take into account relfector etc and if i remember correctly, 'efficiency'. Can someone explain this concept to me?? How much of a variation could this be? Has anyone used both?
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