I am trying to simulate the brightness (luminance) of a TV or monitor with a high degree of physical accuracy. The standard unit for screen brightness is nits. 1 nit = 1 cd/m^2.
I have a VrayLight (plane) set to a luminance value of 1.0 lm/m^2/sr. I could be wrong, but my understanding is this equals 1.0 cd/m^2, which equals 1.0 nits.
When I check the luminance value of the light in the frame buffer using the VrayLightingAnalysis render element, it is multiplied by a value of π (3.14) in units (cd).
Can someone connect the dots mathematically for me?
I have a VrayLight (plane) set to a luminance value of 1.0 lm/m^2/sr. I could be wrong, but my understanding is this equals 1.0 cd/m^2, which equals 1.0 nits.
When I check the luminance value of the light in the frame buffer using the VrayLightingAnalysis render element, it is multiplied by a value of π (3.14) in units (cd).
Can someone connect the dots mathematically for me?
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