This chapter explained the significance of the alpha channel and how to create or manipulate alpha masks using Object Index and keying techniques. A very important understanding about the difference between value and luminance was also covered in this chapter.

Using all the different concepts and techniques explained in this book, many complex Blender node trees related to VFX or CG animation can be created. Based on the desired effect, a specific technique or a group of techniques explained in this book can be applied.