TECHNICALLY, PHOTOMETRICS MEANS “those things pertaining to the measuring of light.” In common usage though, photometrics is used to describe how lighting instruments, or fixtures, are defined as to their sizes, light output, and uses. In his groundbreaking 1936 work, A Method for Lighting the Stage, Stanley McCandless coined the phrase lighting instrument, which he used in referring to lights used for the stage. Perhaps he was attempting to use a scientific name to enhance the image of something that, up to that point, was not given much thought. Lights today are still very often called instruments, but the term fixture is also popular as it fits in well with the terminology used in commercial lighting practice. In most ...
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