I have a question regarding the two Fresnel nodes.
If I use the simple one, that is the Fresnel Utility node, and set the exponent to 1 and the BaseReflectionFractionIn to 0 is the result a linear gradient?
Does it start at a view angle of 0 degrees at pure black and and then progress LINEARLY to pure white at an angle of 90 degrees?
Or is there some sort of internal fresnel math going on that distorts the gradient?
If the latter is the case, is it possible to create such a linear gradient in some other way?
Another question regards the more complex Fresnel node, that is the one under Vector Ops.
The manual states about the input “Inverse Fesnel(B)”:
“This will allow you to invert the effect of the Fresnel. This is useful if you want the Fresnel to only be applied in the center or at the edges.”
What does “only in the center or at the edges” mean? Is this a strange way of saying that the gradient is simply inverted or is there something else? Or is there something else going on as well?