How to Use alpha channels in Photoshop

In the Photoshop tutorial, Richard Harrington takes a look at making an alpha channel based upon the luminance in an image. Alpha channels allow you to store transparency in a graphic and transfer that transparency to another non-linear video editing program or compositing application and key or composite in real time.

Creative Cow is a support community for digital video, video editing, and media production professionals in broadcasting, motion graphics, special FX and film. Creative Cow hosts tutorials in a variety of softwares including Adobe programs (After Effects, Dreamweaver, Flash, Illustrator, InDesign, Photoshop, Premiere), Apple programs, Autodesk, AVID, Cinema 4D, Sony Vegas, Zaxwerks, and much more.

Search WonderHowTo for more Creative Cow tutorials.