Where is the Refr?

I found the Ref but not the Refr.
where is the Refr?

If you change the Specular shader to Blinn, then you get a Refr settings. It used by Blinn as a reference to Index of refraction (IOR). To get actual IOR effects, use RayTrans. If you want to see more about Blinn and the other shaders visit the wiki:


thanks, it was for a water effect that turned out to look good.