Photo-Light is a Photoshop / Element plug-in. It works inside Photoshop 7 to CS4, Photoshop Elements 2 to 7, Corel PaintShopPro 8&more, Corel PhotoPaint, Microsoft...
With Photo-Light you can create many kind of light effects...including glows, fog and many light or shadows cast through many kind of shapes such as windows, grids...
Most importantly... Photo-Light handles displacement of the light according to the background. You can notice how the light seemed to be diffused under the water, or how the light is following the staircase in the exemples below.
The beauty of Photo-Light is that possibilities are limitless, you work with a combination of Channels to be used as Mattes up to 20 in combination, Paths (including warp and distortion) to create Casts for Light or shadows effects... but also Images or Patterns that may be used as mattes to control how the Light will be diffused on the background... Photo-Lights comes with more than 200 of such shapes.
Photo-Light may also be used for more creative effects... such as patterns... special gradients and much more....