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Photography Q&A
continuous lighting - to multi bulb or bump up the power?
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<blockquote data-quote="J-see" data-source="post: 383481" data-attributes="member: 31330"><p>Maybe there's someone knowing more about it but if you want to calculate the required brightness for an area, you have to use lux to find out how much lumen you need.</p><p></p><p>1lx = 1 lm/m2</p><p></p><p>The problem had me puzzled a while ago when shooting smoke. I was first using a 400 lm LED and then got one of those magnesium work lights that had more than 8k lm. Strangely, it didn't seem to do more in regards to lighting the smoke. The reason was simple: because I had to move the lamp further from the subject, now those 8k are divided by the increase in square meters resulting in roughly the same output on my subject. To up the required subject output, I'd have to up the total lumen a whole lot more.</p></blockquote><p></p>
[QUOTE="J-see, post: 383481, member: 31330"] Maybe there's someone knowing more about it but if you want to calculate the required brightness for an area, you have to use lux to find out how much lumen you need. 1lx = 1 lm/m2 The problem had me puzzled a while ago when shooting smoke. I was first using a 400 lm LED and then got one of those magnesium work lights that had more than 8k lm. Strangely, it didn't seem to do more in regards to lighting the smoke. The reason was simple: because I had to move the lamp further from the subject, now those 8k are divided by the increase in square meters resulting in roughly the same output on my subject. To up the required subject output, I'd have to up the total lumen a whole lot more. [/QUOTE]
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Photography Q&A
continuous lighting - to multi bulb or bump up the power?
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