Thanks, Mr. Rick! Your last method works! I am doing this:
1. I add 2D AI layers to Pre-Comp.
2. Create a 3D camera in the main composition
3. Turning on the 3D layer on the Pre-Comp, right?
4. And only when I turn on Collapse Transformations on Pre-Comp, the layers stop responding to the 3D camera, but maximum clarity appears. And if you turn off Collapse on Pre-Comp, then everything is a little blurry. Can you tell me how to fix this? Inside Pre-Comp, Collapse is also enabled on all AI files. Thanks again!
Are you scaling layers? Are you moving way in on the camera?
1. I would make sure all AI layers are in the right order, make them all 3D, then add this expression to every AI layer in your comp.
[value[0], value[1], value[2] + index]
2. Make sure Continuously Rasterize is turned on for all AI layers.
3. Parent all AI layers to the top AI layer so you can move the group easily.
4. Add your camera and animate the camera.
That workflow will guaranatee that your layers behave.
The other simple option is to import the AI file as footage with merged layers, add the single AI file to the main comp, make it 3D, turn on Continuously Rasterize, then add your camera and animate the camera.
If you need all AI layers on a separate layer and you are pushing way in then create a comp from your AI file, open up the comp settings and increase the size of the comp by 2 or 3 times, scale up all layers so they fill the frame, turn on Continuously Rasterize for all layers, then add this big comp to your standard main comp, add the camera and animate the camera.