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Originally Posted by Rinehart
Thanks for the input, everyone. I've written to the author of the book and asked him for a clarification. BTW, is there any fairly straightforward way of calculating how many lamps you'll need of a given wattage if you know what the amount of illumination required is in foot-candles?
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Not totally straightforward. Depends on the directivity of the instruments, reflectivity of surroundings, etc. Those rules of thumb I posted from the 1960 NAB handbook are a reasonable starting point, but... I think they assumed very broad lighting as a base. Current lighting practice probably would use much less flat flood lighting and more directional spots, since the system as a whole has a much better contrast capability than it used to. CCD cameras and high-contrast displays mean that TV lighting can be similar to cinema lighting. Soap operas have used much more dramatic lighting for a couple of decades now, I believe.