I modeled a window pane (as in for a house) and gave it what I think the closest settings to glass as I can, (which is still hopelessly far from realism). But I encountered a strange problem.
I modeled a column outside of my window, as well as a plane. They are both in clear site of if you were looking through the window. Now what happens is if I render, the column shows up as a 2D plane on the glass material, and the plane can not be seen at all. really wierd