Advanced

Physical intensity

At the default value of 1, the shader will calculate the power output of the blackbody according to the Stefan-Boltzmann law. While this gives a pleasing (and realistic) balance between the brightness of different colors, sometimes all you want is the color, without the brightness scaling, in which case you should set this to 0

Physical exposure

Constant to bring the brightness of the color back into a sensible range for rendering at normal scales