Where to find IoR value in https://refractiveindex.info/
polycounter lvl 7
I've been looking at this site for IoR value for some time. But everytime I get on this site it confuses me. Some element seems right some doesn't. Eg, plastics(under shelf 3D, book plastics). it says reflractive index n=1.48. I assume 1.48 is the IoR. I put it into some render engine like vray/mental ray. It seems giving me a good value. I mean the fresnel fall off does look similar to what https://refractiveindex.info/ reflectance chart.
However I pick metal(shelf 3D, book metals) It says the refractive index as n=1.4 . Its clearly won't give me metal look if I put that same 1.4 ior value into vray/mental ray. But it has another value for all metallic material its call extinction coefficient. And in this case it says k=9.8548. So should I use 9.85 as my IoR value in the render engines?
I can't find any other value that is making sense in this page. Does anyone use this site as their resource for IoR? if so. How can I use it
However I pick metal(shelf 3D, book metals) It says the refractive index as n=1.4 . Its clearly won't give me metal look if I put that same 1.4 ior value into vray/mental ray. But it has another value for all metallic material its call extinction coefficient. And in this case it says k=9.8548. So should I use 9.85 as my IoR value in the render engines?
I can't find any other value that is making sense in this page. Does anyone use this site as their resource for IoR? if so. How can I use it