There is no such thing as "minimum illumination"

Back in the days of analog color video production, many manufacturers said their equipment complied with the RS-170A or EIA-170A standard.  Unfortunately, there was never any such standard.

Still, there was general agreement on what that standard would have said had it ever existed.  There is no such agreement about “minimum illumination,” whether it’s in footcandles (fc) or lux (lx).

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