This brings up an interesting question - in computer graphics, do we use luminous flux or radiant flux when calculating how scenes should look? For realism (or perhaps to make scenes feel more natural), luminous flux seems like the right choice, if wavelength of light is even being considered, which might get complicated with weirdly-reflective materials, e.g. glass. But if we DO use luminous flux, what luminous efficiency curve do we use - is there a human standard, or are all human eyes different?
Spectato54
Fun fact: Luminance is the photometric equivalent of radiance in radiometric quantities. It used to be called "photometric brightness", but was changed due to the differences in the perception of brightness and biological factors.
stexus
I would guess the human eye, like many things, lies on a spectrum and this graph here represents a general average. I would also be curious as to when we use luminous flux in graphics -- wouldn't our eyes be "integrating" for us when we actually look at the scene?
This brings up an interesting question - in computer graphics, do we use luminous flux or radiant flux when calculating how scenes should look? For realism (or perhaps to make scenes feel more natural), luminous flux seems like the right choice, if wavelength of light is even being considered, which might get complicated with weirdly-reflective materials, e.g. glass. But if we DO use luminous flux, what luminous efficiency curve do we use - is there a human standard, or are all human eyes different?
Fun fact: Luminance is the photometric equivalent of radiance in radiometric quantities. It used to be called "photometric brightness", but was changed due to the differences in the perception of brightness and biological factors.
I would guess the human eye, like many things, lies on a spectrum and this graph here represents a general average. I would also be curious as to when we use luminous flux in graphics -- wouldn't our eyes be "integrating" for us when we actually look at the scene?