[rickbern]

Anyone have any idea where to get an ior file for Tin? I've tried searching with no luck. I'd love to round out my alchemist's lab!

I'm looking to make a proper bronze. btw, I posted this in the wishlist too.

from wikipedia:

There are many different bronze alloys, but typically modern bronze is 88% copper and 12% tin

[Ha_Loe]

Google search for "IOR bronze" reveals this : http://forums.cgsociety.org/archive/ind ... 13458.html

btw.: you cannot simply calculate the IOR of bronze from the IORs of tin and copper

[rickbern]

Ah, thanks, but I'm looking for the complex IOR.

I think you can make a multi bdsf with the complex ior files in the correct proportion and you get a physically accurate result. Maybe I'm wrong. Anybody know for sure?

[Mihai]

It won't really work for alloys, because the alloy will have its own reflectance characteristics.

[feynman]

See http://www.filmetrics.com/refractive-in ... ase/Sn/Tin where you can also obtain refractive indices and extinction coefficients for many other materials such as plastics or natural materials, often needed in industrial design.

[bograt]

I consider myself a purist but for me when it comes to creating realistic and believable metals in maxwell the ior files are best used as a starting point.
Roughness, anisotropy and texture play such a large part in how the material is percieved that subtleties in ior are lost in the resulting image.
I like the ior bank that maxwell provides but I am never completely satisfied because I almost never render metals in lab conditions
I guess it depends on your project though...

[feynman]

Blimey! One hell of a good render. That tossed cig-butt... so subtle!

[rickbern]

Blimey doesn't cover the half of it...

Thanks all for all the responses. Too bad, I hoped I could just mix metals and get what I was looking for. Back to the lab!