Hi DesuDeus, definitely do _not_ use 3DS format if you have a choice - it's a very old format and has various limitations in it.

Generally for transfer to C4D you would want to use OBJ format, and Exporting N-gons should be fine. If you run into a problem with N-gons with any one particular model try doing "Export: Quads & Triangles" for that particular model.

> the phong tag to smooth to 5° and not the default 80°

When you use OBJ import, there should be a "normals" tag I think it's called which will should control how it is shaded totally in place of setting any phong angles like you're describing here. So when you do OBJ import make user the vertex normals are being loaded and that you're not either deleting the normals tag or have unset the option to import vertex normals. When the vertex normals come through those normals are from the original NURBS surface and will greatly help to make the shading look the same as the original NURBS surface.

One of the various limitation of 3DS format is that it does not have any way in it to store vertex normals, so you would need to mess with phong break angles and such if you're using that format and you'll usually get some various kinds of shading artifacts when the vertex normals are then created only by averaging polygon faces rather than having the original NURBS surface normals come through as you can get with OBJ import.

- Michael