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Old June 30th, 2008, 01:27 PM   #1
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desert heat effect

I`m looking for the best way to simulate the heat coming off the desert floor. It lasts a certain distance and has a very distinct ripple to it. I was thinking an adjustment layer with a gradient matte on it...but what to apply to make the 'heat displacement'. Turbulent displace goes in noticeable loops, not sure what else to try
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Old July 1st, 2008, 12:21 PM   #2
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I'm working on this effect as well. I need to try a 'practical' element: film the shadow of a charcoal fire and use that as the displacement map. I'll get to it eventually, let me know if you get any play from that idea.
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Old July 1st, 2008, 02:12 PM   #3
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I was just going to suggest using fire as a displacement map. The turbulance you're talking about should be the same air displacement regardless the source of the heat. You could potentially shoot a tight grid placed behind the fire as well and shoot over the flames where the heat displacement would be hitting the most and use the resulting distortions as a map for the displacement map... or a medium gray which you could then push to the extreme black and white with a color corrector to make the displacement more effective.
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Old July 1st, 2008, 05:58 PM   #4
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Found this in about 10 seconds with a Google search (what would we do without Google?)
http://creativemac.digitalmedianet.c...e.jsp?id=34773
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Old July 1st, 2008, 06:04 PM   #5
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And if you have the ability to do it during acquisition... shooting over the hood of a hot car can get the heat wave effect for you. An old trick.

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Old July 2nd, 2008, 10:10 AM   #6
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You shouldn't need an effect this time of year. But you can film with a tota light in front and below the camera.
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Old July 3rd, 2008, 08:07 AM   #7
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Thanks for the tutorial, looks like it should do the trick.
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