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which of 3 strobes for cave diving, imaging for science

strobes cave research lighting budget mapping cave diving inon sea & sea wide angle

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#21 Fruitographer

Fruitographer

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Posted 23 May 2018 - 08:49 PM

I just tested the strobe output versus video light. Using my demonic 758 light meter I tested Both the DS125, DS161, and Big Blue 25,000, and 30,000 lights.

 

The settings were ISO 100 at 125th of a second from 20 inches. Both strobes were at F22 and the lights were at F4.0 5 and F4.0 9. So 25,000lm was right in between F4 and F5.6, while the 30,000 was just barely below F5.6. that's a big difference between the strobe and video lights. Even a small weak strobe would work better for you than a powerful video light in most cases. 







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