3 Replies Latest reply on Aug 17, 2016 7:20 AM by Szalam

    Alpha masking

    rossyra

      Hey folks

       

      Just getting to grips with alpha masking and come up against a problem I can't seem to find an answer for - I'm probably just searching the wrong terminology or something but hoping someone here can set me on the right path!

       

      I have a logo which I want to be revealed by an animated mask which is tracking the movement of some orange discs which pass in front of the logo's position. I have the animated mask in a pre comp.

       

      The problem I have is that while the alpha mask works, it also seems to be overlaying itself so that the graphic comes out a solid black when revealed. To demonstrate, I've attached three screen grabs:

       

      Logo shown without mask

      Main-comp-1.jpg

      Mask layer shown in progress without matte applied

      Main-comp-2.jpg

      Composition shown with alpha matte applied to the graphic layer

      Main-comp-3.jpg

       

      Any help you can offer would be greatly appreciated - I've been back over my tutorials and just can't seem to spot what I'm missing!

       

      Thanks for your time

       

      Matt