this tutorial is about how to recreate the off-axis setup of my SV Stereo Rig PRO within After Effects.
So you can align lens flares and other compositing elements correctly to your footage IN STEREO! 😀
Many thanks to Thanassis Pozantzis, who developed this method and shared it with me!
1) Import the .aec-file
2) Duplicate the left eye comp and name it “Stereo Right”.
3) Open the “Stereo Right” composition.
4) Place the “Stream Right” footage where the “Stream Left” footage was.
5) Clean up. Delete all cameras from the “Stereo Left” Comp, except from “SV Stereo Rig PRO v5.2 Left”.
Do the same for the “Stereo Right” Comp with the “SV Stereo Rig PRO v5.2 Right” Camera.
Now move the “Stereo Right” footage to your other comps and delete the “Stereo Right” Folder After Effects
has created. You’ve got two comps, now. One for the Left eye and one for the right eye.
B) Let’s really get started!
1) Open up the comp for the right eye.
2) Make sure you’ve selected “SV Stereo Rig PRO v5.2 Right” as your camera.
3) Pre-compose all 3D Elements (Cameras and Lights). You will need a solid or some footage to be able to
pre-compose. So just duplicate something and delete it afterwards.
4) Jump into your pre-comp and increase the width e.g. by 50px. (Ctrl + K)
5) Add cool lens flares and stuff! 😀
For the right alignment it’s important that the Solid or Adjustment Layer has
the exact measures of your pre-comps size!
6) Go back to your composition and show the position of “After Effects Camera offset” and your pre-comp.
7) Alt click on the stop watch before the position of your pre-comp to create an expression.
8) Now put a “+” (plus) behind “transform.position”
9) After that pick-whip the x-position of the “After Effects Camera Offset”
10) Click anywhere to finish the Expression.
11) The lens flares are aligned propperly.
Another great tip by Thanassis Pozantzis!
With this quick expression you can control how the flare tails are perceived in depth.
1) Put Stereo Left and Stereo Right into a new composition, where you are merging them together. You can use
the 3D glasses effect for that or the optimized anaglyph filter by David Shelton, I’ve used in this example.
2) create a new slider control by right clicking in the Effect Controls Palette and choosing:
Expression Controls -> Slider Control
3) Create a new Effect Controls Palette.
4) Go to the Optical Flares of your left eye and Alt-Click on the stop watch at “Center Position”.
5) put a “-” (minus) behind “effect(“Optical Flares”)(3)”.
6) Pick-whip your slider control.
7) Click anywhere to finish the Expression.
8) Repeat the same with your precomps Optical Flares, except for using “+” (plus) instead of “-” (minus).
You can switch plus and minus between the eyes, so it matches your personal taste / logic.
And for everyone who was brave enough to scroll to the bottom of this page, here is a snapshot of Thanassis’
Xpresso Setup. With this setup the Film Offset of the right camera is transferred to a pixel value and stored
in the “After Effects Camera Offset” Null object as a position value. This value is used in After Effects to
move the pre-comp. It also works with an animated interaxial! 🙂
The Range Mappers are set to “Input Lower: 1” and “Input Upper: -1”.