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Question - Best way to render

ZBrush Usage Questions
#1

Question: Which is better to use in rendering to have a smooth mesh that takes less time to render?
1 - Mesh Subdivision in Tool> Geometry> Divide + Smooth
2 - Render> Render Properties> SmoothNormals
3 - Tool> Geometry> Dynamic Subdivid

#2

In Zbrush, with a 3d polymesh, the best way to render is generally a fully subdivided mesh with the BPR renderer. Dynamic subdivision is useful to preview the way a low resolution mesh will be subdivided, but wont let you use advanced features like polypaint or sculpt high poly detail.

There are plenty of exceptions depending on the situation, and some program features may require you to render a certain way.