No smooth curved edge of surface

I do not get a smooth curved edge on my surfaces. I guess it is a setting but i cannot figure out which one. Attached is an image of my problem.

Regards , René

Have a look at this to explain the faceting you’re seeing:

Message assigned to Rhino for Windows category

Thanks John. I changed the mesh settings and now it is okee. I presumed that would not have an effect since i wsa rendering in vray. But it does.

Regards, René

Correct. Rendering uses meshes so any rendering tool will be effected by the file mesh settings.