This was my original light situation that got me to do the TS render example. I was setting up an inside light to cast a shadowed cone of light through a barn window to the outside. The window had panes of glass with frames around each pane. I found that this didnt work, and that it was pretty much the same as my OLD copy of RDS.

When turning on shadows for the cone light the shadow effects as well as cone effects get stopped when going to a glass window. Not only that, the light does not pick up the glass color and attenuate it based on thickness or color density.

TS not only properly transmits light cone shadows, it attenuates per real-world optical physics, and when it interacts with the glass color, it combines the colors to produce a transmitted light cone that nicely shifts the light spectra. It is more accurate than Vue, which really isnt too bad.

This is not a Carrara bashing thing for me! Overall Im very happy with C5Pro, but I think all us committed users need to remind Eovia that some fundamental features are still missing from C5Pro. I would even be happy if Eovia were to market a nice Light module plug-in to enable the stock light effects to be all raytraced along with C5Pros excellent rendering abilities.