Doug Kerr
Well-known member
I have just posted to my technical information site, "The Pumpkin", an updated issue of my tutorial article, "Characterizing the Output of Photographic Flash Units", available here:
http://Doug.Kerr.home.att.net/pumpkin/index.htm#PhotoflashOutput
The revisions are minor and are mostly editorial in nature.
Of particular interest to those here may be the discussion in the article of the practice of describing the "potency" of studio photoflash units in terms of "watt seconds", which is of course not a photometric unit and which does not give a consistent indication of the potential impact of a photoflash unit on photographic exposure.
http://Doug.Kerr.home.att.net/pumpkin/index.htm#PhotoflashOutput
The revisions are minor and are mostly editorial in nature.
Of particular interest to those here may be the discussion in the article of the practice of describing the "potency" of studio photoflash units in terms of "watt seconds", which is of course not a photometric unit and which does not give a consistent indication of the potential impact of a photoflash unit on photographic exposure.