As we mentioned recently, we've been updating our After Effects Apprentice video courses to reflect changes in the third edition of the book, and in particular new and enhanced features introduced in recent versions such as After Effects CS6. In this movie, we give a quick start on using the new Mask Feather tool added in CS6. We start by showing the old way of feathering a mask, discuss changes in the Pen tools between CS5.5 and CS6, and then show you how to add Mask Feather points to an existing mask path.
You can view the entire course AEA05: Creating Transparency on the lynda.com site.