Luminance or Illuminance ?

Started Mar 28, 2013 | Discussions thread
GeorgianBay1939
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Re: Luminance or Illuminance ?
In reply to Chas2, Mar 28, 2013

Chas2 wrote:

I have to take time to look this up, but I would just say be careful of the terminology.  I seem to remember from my wife's interior design lighting class that these are two separate definitions in photometry (think it was a test question she got wrong).  I appreciate the distinctions you are trying to make, but you may wish to make sure your usage is consistent with international standards...if you care.  So long as you know what you are using the term for, I guess it does not matter.

Good advice. Yes, I care.  I want to keep it consistent with SI but understandable by my photog friends who don't have a lot of science/engineering background.  This is pretty esoteric (useless?) stuff for some of them.

Thanks,

t

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