Luminance To Lightness, Brightness & Luma
Luminance (Y)
candelas/m
2
Reference White (Y
n
)
candelas/m
2
Lightness L*
%
Luma (Y')
Brightness (HSV)
%
LAB to RGB conversions are referred to space Prophoto (D50 and gamma 1.8) Read more: "
Hacia un “Sistema de Zonas” digital: evaluando escenas en términos de L*
"