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How to Make an Expanding Shadow

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Russell LevensonHow to Make an Expanding Shadow
by on Jun 2, 2010 at 8:51:00 pm

So unfortunately all I have to work with is a picture. Is there a simple way to make a shadow look like is moving across a surface? Like have a shadow spread across the expanse of a desert, but without masking and all that business?

Thanks.


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Michael SzalapskiRe: How to Make an Expanding Shadow
by on Jun 2, 2010 at 9:59:42 pm

What do you mean, "Without masking and all of that business"?

How do you propose creating a shadow?
You could create your shadow by casting a shadow by using 3d layers and lights. You'd have to either animate the light or the layer that's casting the shadow. (Or both.)

You can also use a layer (masked or not) as a track matte for an adjustment layer with levels and/or curves applied (or a black solid).

This tutorial on shadows may help or possibly this one.

- The Great Szalam
(The 'Great' stands for 'Not So Great, in fact, Extremely Humble')

No trees were harmed in the creation of this message, but several thousand electrons were mildly inconvenienced.


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Dave LaRondeRe: How to Make an Expanding Shadow
by on Jun 2, 2010 at 10:14:44 pm

[Russell Levenson] "Like have a shadow spread across the expanse of a desert, but without masking and all that business? "

So like no -- masking a solid on that still picture is the way to go. Animating the mask, that is.



Dave LaRonde
Sr. Promotion Producer
KCRG-TV (ABC) Cedar Rapids, IA


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