 Compositing Fog or Mist | ||||||
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Compositing fog elements seems like a pretty straightforward thing to do in After Effects. Shoot or render your fog element against black, and then Add or Screen it on top of your footage, right? Wrong. This method is incorrect. Let's go over why.
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After Effects CS3 Useful things How to Views: 4614 Permalink | ||||
A better alternative, is to create a new soild layer, and use the color eyedropper tool to select an appropriate gray color to use for our fog. I generally try to use a color near the horizon.
Now all we have to do, is use the fog footage's luminance as a mask on the new gray solid we just created. To do this, simply layer the fog element footage over the solid, and set the solid's track matte to "Luma Matte." That's all their is to it. Your composite will now look much more natural. Finally, we can add one more last touch to this composite. Select your background plate layer and add a Compound Blur. Set to Blur layer in the Compound Blur controls menu to be the fog footage element. This will use the fog element's luminance as a mask for blurring the background plate. Set the blur to be around 0.5-1.0. by Daniel Broadway Effects & PluginsCompound Blur(Min. Version: After Effects CS3, Category: Useful things, Type: How to) 
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posted by MaxX on Sep 11, 2010
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Using the Puppet Tool with Particles | |||
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In this video tutorial, Creative Cow Leader Aharon Rabinowitz shows you how to simulate airflow over an object by using the After Effects CS3 puppet tools with a particle system.
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After Effects CS3 Useful things Video-/Tutorials Views: 2636 Permalink | |
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posted by jamie on Sep 12, 2008
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Difference Matte Effect Tutorial | |||
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The Difference Matte effect creates a transparency a mask or a matte by comparing the pixels in a source layer with the pixel in a defined difference layer, and then keying out (eliminating) pixels in the source layer that match both the position and color in the difference layer.
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After Effects 7 Keying Video-/Tutorials Views: 14509 Permalink | |
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posted by peter17 on Sep 29, 2008
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3D Shadows (Video Copilot, No. 71) | |||
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Cast 3D shadows onto live action footage
Use shadow diffusion and special material options Tutorials for Visual Effects & Motion Graphics Free After Effects Tutorials & More Hosted By: Andrew Kramer |
After Effects CS3 3D Video-/Tutorials Views: 5702 Permalink | |
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posted by MicGyver on Nov 11, 2008
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