Shadows are often the hardest part when creating composites. In my workshop I often get the question can’t we just take a copy of the model, duplicate that, make it black and use that as a shadow. My answer was always ‘no’ till recently. I am gonna show you a way how you can (often) use your model as a shadow.
[editor’s note: we are huge fans of Aad Sommeling. Aad is big about sharing and we are quite happy that he allowed us to share this primer, if you want to get deeper into the world of compositing, there are also a few workshops he made that will help you get started]