Discussion from Cineversity V1:
In this segment (Blending Passes) of your tutorial, I noticed that the shadow pass movie does not contain shadow information for the sides or front bevels of the video wall. Do these areas need an external composite tag in C4D? In that segment, you demonstrate being able to colorize the shadow, but only the cyclorama background and the shadow cast from the text onto the front of the video wall are effected.
Answer from instructor:
The lights were arranged such that no shadows fell on the sides of the videowall. The shadows are also cropped by the Object Buffer pass, so yes, you would need to assign object buffers to every surface you wish to be included in the matte.