Zchannel Compositing

[user_deleted]

Dear Sirs, I have the following dillema to work out:
I need to compose in combustion or shake two image files ( already rendered with max RLA containing both ZDepth information) and i need to use the Z channel so the objects occludes each others according to their distances in the real Scenes( i mean to hide each others like matte) how that could be done or do you suggest any tutorial
thanks in advance

[user_deleted]

Layer -> ZCompose.

Also there is a tutorial shipped with Shake about ZComposing.

[user_deleted]

I suggest using the documentation which came with your software

[user_deleted]

Sorry because I didnt state my problem well, here is my problem:
I know about Z Compose in shake but the problem is I am trying to compose 2 scenes, the first scene is a marina buildings and boats and stuff and the other scene is the water surface
and i have z information in both files but i always ended with the result pixelized (as if you didnt apply AAliasing) on the border of the composition I Mean where the water hit the board of the building and i am using 32 bit RPF ,what am I missing?

[user_deleted]

Z Buffers are always aliassed (NOT antialiassed). An antialiassed Z buffer is a meaningless concept, it suggests that the edes of object change position in Z space relative to the amount of antialissing occuring in the pixel. This just isnt true so Z buffers can not be antialliassed.

Your best bet is to use edge detects, blurs and various integraton techniques to fix the artifacts that occur.