Hi maru,
at this moment I have no a specific situation with "dielectric material close to metal".
But i think that in nature there are a lot of dielectric materials close to metal?
I try to explain in my poor english what I want to say:
In some cases I try to make a material (I don’t know in advance if it will be metal or dielectrit ) so have to play with ior from 2 to 4,
I have the following situation:
- using legacymaterial increasing the ior no problem, I increase ior for example 2,5-2,8-3,0-3,2...etc. No problem, the material became step by step more and more metallic in “linear” mode.
- using physical material and increasing the ior all ok up to 3 but if I need the ior more then 3 I have to switch to metal material I note a too big step on becaming metal from dielectric.
Try yourself, start with a physicalmaterial,
start with non metal with ior close to 3
suppose you need a little more reflection but 3 is not enougth
at this point you can switch to metal but if you do that the material change drastically.
Maybe my workflow is wrong.