View Full Version : Zdepth
12-09-2004, 10:46 PM
I'm getting a zdepth render with luminance values, but the scene I'm working with has a black area and a white area with a distinct cutoff.
Is there a way to get a more linear gradient so that the DOF effect is more gradual and realistic? I'm using the renders in AE with the FrischLuft DOF plugin.
12-09-2004, 11:33 PM
Try making a copy of your file and make all your objects matte black.
Add a white fog to your scene and adjust the depth as needed .
Use this render as your dof channel in frishluft.
I assume the c4d multi-pass depth pass wasnt to your liking?
12-10-2004, 12:05 AM
In addition to what Joel said you can refine your Z depth by setting up dof in your render camera.
12-10-2004, 10:19 AM
I also use the Frischluft in AE, but render to RLA and use the internal Z-buffer within that format. (It's the default in Frischluft). Then in the Frischluft I set my depth values.
Initially it is all "white" and you have to adjust the front and end values to pretty high values plus then use the focus cross to set the sharp area.
The z-depth are by definition 8-bit (even if you put a higher bit picture in Frischluft as a guide)so there are some issues (read in frischlufts site about it) regarding aliasing. There are a couple of ways to solve it. Either render at a higher resolution (and scale it down afterwards) or render in layers and have different dof/blurs per layer (which very much defeats the purpose if a DOF filter really)
12-10-2004, 05:07 PM
@JoelD - That sounds like it could work well with some kind of uniform lighting, I'll give it a try.
@AdamT - This should have been obvious except that I just got XL and have become used to not having these controls.
@tcastudios - z-depth must be 8-bit? I was assuming there was a simple solution to the aa issues. They seem to suggest on the lenscare site that it supports 16bit.
I haven't tried this yet, but take a look at this plugin. They state that 3rd party plugins can also take advantage of 16bit in AE. It looks like it requires AE 6.5 Pro:
01-20-2006, 03:00 AM
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