Object in 3D photo problem

by swave » Tue Sep 15, 2015 6:15 pm

Hello

I'm trying to use objects downloaded from 3dwarehouse.sketchup.com.
They look good in the normal 3D view, but when I make a photo the
models have strange artifacts.

Image

Is this a problem of the model? Do I have to correct the normals?
Is there a program that can do it with keeping textures?

Thanks