The flash makes a burst of light. Its duration is dependent upon the size of the flashtube and the power output of the flash. For example, I have a studio flash at full-power (2000j) that has a long duration of about 1/150 sec. The duration of a little flashtube at low power is very fast indeed. So as long as the pulse of light can fit into the time the camera shutter is open, it will be effective. I suggest it was so dark that the ambient light on the tentacles was so little as to be negliable. (By the way, Bob, I was just thinking I should get rid of my Subtronic strobes too - if they still work!)
John BantinMember Since 24 Mar 2005
Offline Last Active Nov 24 2013 01:21 PM
When you get to my age, happiness is a bowl of bran for breakfast.
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former Technical Editor of
Diver Magazine (UK) and www.divernet.com
Author of Amazing Diving Stories (Wiley Nautical)
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Camera Model & Brand
A Nikon D800 of course!
Strobe/Lighting Model & Brand
Too much, some of which works.
Diver Mag. UK
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