fluid density fall-off

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How can I control the density fall off on fluids?. I need a sharper edges on my fluid and get rid of the typical blur edge. I tried increasing the “Uniform Divisions” on the Smoke Object and that helps a lot. I'm also increasing the Amplitude on the BillowySmoke Shader to get more definition on shape, but I still have blurred edges on some areas. I wonder is there is some control that I'm missing to manipulate the density fall-off.

Thanks!
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You can probably re-map the density using a volume mix SOP to have a sharper falloff to density. Have you seen Mario's masterclass movie on the pyro shader? Even though you're probably not using the pyro shader, it has tonnes of good info in it that really helped me understand what's going on with shading volumes in mantra.

http://www.sidefx.com/index.php?option=com_content&task=view&id=1496&Itemid=132 [sidefx.com]
Sean Lewkiw
CG Supervisor
Machine FX - Cinesite MTL
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I will try the volume mix and will check the video as well.

Thanks!
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