I guess I'm a little confused about the purpose of CTO on the windows. Is the purpose just to correct the light itself that's coming in the window that would otherwise be casting blue on your subjects? ( where the window itself is not in the shot) Or does it allow you to include the window in your shot and everything outside be color balanced to your tungten stock as well? Or both? Is it the same as just putting an 85 on the lens and using HMIs inside?
Incidently, I did read an article in a recent ASC where the DP of "Be Cool" said something about not liking to shoot with ND's on the windows because of getting a reddish tint. I'll look it up and re-post.
Thanks,
Mark Hutto