today i found a strange behaviour. when i import a simple .ai file und convert it to a shape layer, its edges get a slight blur when turning on 3d. it looks as if there was something like an antialias bug. for my recent project in fact i need highly sharp edges... any idea how i could solve that issue?
There is nothing to solve. Turning the layers into 3D layers rasterizes them and then the normal 3D filtering kicks in. Welcome to AE's 15 year old 3D space! If you need real sharpness, you need to use a real 3D program/ plug-in with geometry-based antialiasing like the included Cinema 4D Lite.