This is an update to a previous tip on how to mask objects in Cinema 4D. The update includes the tip of inverted masking which will keep only what is visible on the opposite side of the mask. This can be used to create some unique effects as well. As an added bonus I included an After Effects Masking Tool to make your mask object look like it came straight out of AE. If you work primarily in After Effects this tip and tool will make you feel right at home!