monolight watt sec. question

Started Dec 19, 2012 | Discussions thread
Quantum Help
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Re: depends...10 perhaps
In reply to Quantum Help, Dec 20, 2012

Ws is a measurement of power delivered from a capacitor to a flash tube. For a better reference of light output, BCPS (Basic Candle Power Seconds) is the amount of light produce by the flash tube. Wonder what the photographers in the 1800's used as a measure of light output for their black powder flash guns?

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