decorators3 Posted May 22, 2023 Share Posted May 22, 2023 HI I have been trying to determine exactly what INDEX OF REFRACTION means in exterior ray trace view. I see various options for glass but not sure if this is something I need to adjust or go with what the system has default. If the glass is adjusted does it make any difference to the window reflection Thanks Levina Link to comment Share on other sites More sharing options...
KathReece Posted May 22, 2023 Share Posted May 22, 2023 Hi Levina, Can you post a screenshot of the dialogue where you are seeing this option? Link to comment Share on other sites More sharing options...
TeaTime Posted May 22, 2023 Share Posted May 22, 2023 (It's in the Material definition) 8 hours ago, decorators3 said: I have been trying to determine exactly what INDEX OF REFRACTION means in exterior ray trace view. IOR in Chief is a smidge misleading as it implies it only affects refraction, but it certainly controls reflection as well. It's not really getting into the nitty gritty of real world optics, merely imitating it. in Chief, the IOR simply controls how much photons will interact with the material - so the larger the number, the more reflective and refractive the material will be. Link to comment Share on other sites More sharing options...
SHCanada2 Posted May 22, 2023 Share Posted May 22, 2023 I had a post couple months back on this Link to comment Share on other sites More sharing options...
decorators3 Posted May 22, 2023 Author Share Posted May 22, 2023 see attached screenshot Link to comment Share on other sites More sharing options...
TeaTime Posted May 22, 2023 Share Posted May 22, 2023 reflective index of 2.4 should be VERY reflective -- but only in a Ray Trace view. Default glass is 1.52 2.4 is slightly less than that of a diamond: Keep in mind too that this is considering the old CPU ray tracer. The new RTRT engine is much better at this stuff (crown glass vs diamond) Link to comment Share on other sites More sharing options...
decorators3 Posted May 23, 2023 Author Share Posted May 23, 2023 THANK YOU ALL VERY MUCH ! I AM EXPERIMENTING WITH IT NOW Link to comment Share on other sites More sharing options...
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