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Re: Parent Child Compositing

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Filip Vandueren
Re: Parent Child Compositing
on Apr 20, 2005 at 10:30:50 am

Hi Kim,

If both layers were fully opaque to start with, there's no need to do it for the bottom layer too.
Because at a input value of 50% grey,
both layers would be at 50 % opacity, wich does not add up to 100%

And here's a faster way;

  • Get the three layers situated in your file
  • make only layer C visible
  • switch to channels and command-click on the RGB-channel -> turns the grayscale equivalent into a selection
  • hide layer C, show layer A & B
  • Select layer B (you should still sea the 'marchin ants' of your complex selection.
  • click on the layer-mask icon -> it automatically creates a layer mask that's equal to the current selection


If that's wrong, you should invert the mask.


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