Hello @ all!
I do a research for stereoscopic workflows with the new Stereo 3D Rig in Adobe After Effects CS5.5.
I really searched the web and think there is no resource about stereoscopic workflows anywhere that I've not seen.
I even bought the Video2Brain-Tutorial hosted by Angie Taylor.
But though there are few questions remaining!
1. How can I achieve a horizontal image translation (HIT) with a parallel camera setup (without converging) to adjust my parallax?
background information: I try to compose some text-layers with my real-footage shot with a parallel setup. I know how to set the footage-parallax indepently with expressions - this is not the problem!
I don't want the Stereo 3D Rig to converge when adjusting the parallax for my compositing elements (the text-layers).
I tried it with a mix of using the stereo scene depth parameter and the scene convergence parameter, also tried the expression which avoids moving the convergence plane, but i can't manage to get the result that i want. This is because i have to decrease the stereo scene depth to about 0,1% which is too less, but otherwise the deviation of left and right view is too big. The coordinates of the text-layers are ok.
Of course i could just use the Converge to option (as everybody does this in all the stereoscopic workflow resources that are available in the web), but this creates strong keystoning effects and in a way works against the principles of stereoscopy.
Also this is not recommended by the Adobe Help Sites:
You can also use parallel virtual cameras. This technique is useful if you need to match live footage and add digital elements to that scene. Keeping the virtual camera orientations consistent with the cameras used in the footage helps to keep the perspectives of the digital elements and that of the stereo footage aligned.
[…]Real scenes are almost always shot with parallel cameras. Keep this in mind if you are trying to mix and match live footage with digital elements. If your scene consists of only 3D elements in After Effects, then it is probably safe and preferable to use converged cameras.
Understanding stereoscopic 3D in After Effects
2. What about the Stereo 3D Rig for compositing purposes with footage rendered out of Cinema 4D?
I try to figure out a stereoscopic workflow in After Effects allowing me to make use of the composition-project-file that i exported out of Cinema 4D.
After importing the file i have my left and right camera and some Nullobjects as placeholders which are supposed to be replaced by some other 3D-elements in After Effects (e.g. text-layer).
Actually, the cameras have already the right data and could be used, but the of course creates left and right Eye View automatically based on the Master Cam.
Is there any idea for using the Stereo 3D Rig in a stereoscopic workflow to make a compositing with data exported out of Cinema 4D?
Or is it better to create, in this case, a structure of compositions which only uses the cameras exported from Cinema 4D?
Any help is appreciated!