Hello
I am very satisfied using Corona Render together with Cinema4D. I usually build models in ArchiCAD and use the DIN3D Exporter. So a quite common setup that works very well.
Still I sometimes recognize the same problem with subdivided plane surfaces. There seems to be an edge break along the diagonal line in the model.
It has nothing to do with the material, the Phong Tag or the Mapping.
It is invisible and always correct in Interactive Rendering preview. But the final render is always wrong. This is very strange, no ?
I have attached two images and the file where you can see the one surface creating that shaded diagonal.
It would be great to know what is the exact problem with the model or the scene to avoid this things or create a proper workaround.
Thank you so much for your help.