Adjusting Falloff RGB curves

[hoseinasadi]

Ive been trying to use falloff map RGB curves instead of using the fresnel value for having a physically more accurate result. I extract the curves off Infractive Index website. However ive been having a hard time adjusting the curves and I end up with weird results due to not having the curves properly set. Ive attached the Iron below for an instance. Is there any way I can adjust these curves correctly?

[RyderSK]

That's because that's not, how it works.

 

S-Polarized and P-polarized aren't color spectrum channels.

 

1)For colored metals, you need to input wavelength for each color spectrum (red/green/blue) and then only use the middle non-polarized curve.

2)For non-colored metals, you can use directly the non-polarized curve.

 

1B Note) Reflective curve that starts at 0.5 and has slight late peak towards 1.0 at grazing angle, is the same as using RGB128 (linear 50perc.) in specular slot and having fresnel off. Simple, and same "physically accurate".

 

2B) Rewatch the tutorial more properly.

[hoseinasadi]

you need to input wavelength for each color spectrum (red/green/blue) and then only use the middle non-polarized curve.

 

Is the wavelength the vertical value?