Oops., make that 

"Make sure your exported UVW files are 16 bit or floating point, and that your AE project is 16 bit or floating point. "

Pete

From: Peter Litwinowicz <pete@revisionfx.com>
Reply-To: After Effects Mail List <AE-List@media-motion.tv>
Date: Monday, January 14, 2013 10:46 AM
To: After Effects Mail List <AE-List@media-motion.tv>
Subject: Re: [AE] UVW from cinema 4d to AE

Hey all,

You definitely want to to import the UV footage without any color management (that is, turn ON Preserve RGB).

Make sure your exported UVW files are 16 bit or floating point, and that your AE project is 8 bit or floating point.  (Perhaps I'm stating the obvious here?)

This is all explained in our tutorial that  we did with the help of Maxon: http://help.revisionfx.com/tutorial/150/

Pete Litwinowicz

RE:Vision Effects, Inc.

From: Brendan Bolles <brendan@fnordware.com>
Reply-To: After Effects Mail List <AE-List@media-motion.tv>
Date: Monday, January 14, 2013 10:26 AM
To: After Effects Mail List <AE-List@media-motion.tv>
Subject: Re: [AE] UVW from cinema 4d to AE

On Jan 13, 2013, at 1:58 PM, Richard Green wrote:

I did a lot of work with ReMap UV recently, and my UV pass came from Cinema. I'll check my settings at work tomorrow but I think maybe you don't want to preserve RGB as a first point.

I don't have any experience with this, but my guess is you do want Preserve RGB checked if your UV source is an EXR and you're not using EXtractoR to pull channels out of a multi-channel file.

With no project working space set, AE defaults to performing a gamma-like operation on EXRs.  The test would be to look for the center of your UV map where you expect the value to be (0.5, 0.5).  If it's higher than that, try Preserve RGB.

AE's default makes sense for image channels but not for data channels like UV.

Brendan

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