Screen, Multiply, Transparent

When you using some blend mode(screen, multiply, spotlight blend), the transparent setting won't work. There are few ways to deal with this, for me, i like to use Front Source Node.

For blend mode like screen, spotling blend and max, just add the Front Source, and set the transparent inside the Front Source Image to fade in/out.


For blend mode like multiply & min, just add the Front Source, and add a white frame to the Front Source, then to fade in/out, just adjust the transparent of the white frame inside Front Source. (note: the image2(2) is image, just like the above picture. It appear as white because we have attach a white frame into the Front Source Node)
Of course, you can just add the background clip back in front of the 2 blend clips, then just fade it in/out. But this won't work if you under layers is not just 2 blend clips, say 4 blend clips each with different blend mode.

By the way, Front Source do has some limitation..., next mail.


Autodesk SmokeTips & Tricks
http://mysmoke.blogspot.com