Over a year ago, I posted about the Shadowcatcher shader.
As I get ready for my Wednesday Seminar in Los Angeles - seats still available since we rented a hotel for the large crowd already signed up - it seems appropriate to bring this up again.
Universally, folks are astonished that a shader exists that make elements invisible, except to cast shadows. Imagine how you use this to put your model into a context photo.
All this and more on Wednesday - call Eric Bobrow for more info.
Dwight Atkinson