Mist with ZDepth

[Mylenium]

Hello AfterEffectors!!

I have a scene in which i would like to Use the Zdepth as a 'mist' layer. I know its possible but i havent been able to get it working.
In theory I would want a grey solid layer and set it's matte to the zdepth which should give me a misty effect..right??

I think you answered your own question, so what's the problem? How are you importing your Z-depth?

Mylenium

[Rodi]

hi there,

Im importing the zdepth as image sequence. I had two sets of zdepth one with alpha and one without, that makes a difference i guess,

Whn i Set matte it just uses the alpha not the actual zdepth, im obviously missing something here!!

[XanderFX]

I posted a reply to a similar question on how to acheive this using 3d channel extract here:
http://www.cgtalk.com/showthread.php?t=241104

[Rodi]

yes i saw that earlier, my zdepths are seperate, they are not embeded into a rla file.

.tga instead.

Btw. I dont want a z-depth blur. I want to use the zdepth to create a misty forest effect.

[XanderFX]

If they are just greyscale .tga then make sure they are above the the grey solid and then use a luma matte not an alpha matte

[Rodi]

Thats the Key 'Luma Matte's' Thanks XanderFX
Had to do some more digging to find out exactly how they worked,
Check this out if anybody is interested
http://www.editorsguild.com/newsletter/MarApr03/tip_ae_track_mattes.html

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