Funny thing, but that makes sense to me. Agent Smith, in the Bryce forum did an experiment with scaling up an entire scene and making note of how much better the same materials seem to map on the larger scene and the apparent increased detail in the materials. I know that the inner workings of Carrara and Bryce are quite different, but this may follow some common rule of logic and function in 3d software. It would be interesting to see if this is also true of other 3D apps.