Let's have a look at the origins of Alpha Channel in images in order to use it more effectively in the Material Editor and in compositing maps and images. Later tutorials will make use of alpha information in a more practical application. As a side note; my blog site has be down a bit lately as well as my email address tedb@tbmax.com . If you need to contact me use tbdesign1@earthlink.net if you don't hear a reply from me. Thanks Ted   more »