If I get the chance (I need to do a bunch of grading today) I'll measure
it in my optics lab with a photodiode.
Jack writes:
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Hi Michael-
Turn it on while running a VCR and compare adjacent frames.
Regards,
Jack
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Don't be fooled here by a common circuit in the video camera. Just like
your eye, the video camera adjusts to light levels. It might well show a
rapid brightness surge followed by a drop to a "steady state" level.
I'll try to measure it today and post the results on the web.
John
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John E. Sohl, Ph.D.
Professor of Physics
Weber State University
2508 University Circle
Ogden, UT 84408-2508