Knowledgebase
How do I put light behind an object?
Posted by Marco Paolini on 19 August 2010 12:46 AM
Putting light behind an object can be achieved in one of two ways.
  1. Create a Photoshop selection prior to applying light. Once Light is applied, it will only show up only in the areas of the selection.
  2. Create a selection inside of Light. Your results will be dependent on there being some type of difference between the object you are trying to isolate and the background.
  • Change the Shape>Blend Mode from Shape Only to Multiply. The Multiply blend mode only adds the shape in the areas of the selection.
  • Use the Selection controls to isolate where the light will appear.
    • Set the Selection>Extract On value to give you the best separation between the object and the light.
    • Change the Selection>Position parameter if you want to select different values to be used for the light.
    • Increase the Selection>Range value to add more light into the scene. Decrease for less light.
    • Increase the Selection>Blur parameter to soften the transition areas of the light.
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