HD Geometry
From ZBrush Info
HD Introduction
HD Geometry is the next evolution in Sculpting. HD Geometry allows you to divide your model to 1 billion polygons while only taxing your system with the polygons you are using onscreen.
HD sculpting is an extension of subdivision sculpting. Using HD sculpting, you first do regular subdivisions of the model you are working with, up to a level your system can comfortably handle. If you need further subdivision levels beyond that, you can perform HD subdivisions (as discussed below). These add polygons to your model exactly as for normal subdivision, but keep the portion of the model that is being worked with at any time to a size that leaves your system reponsive.
To Learn About Using HD Geometry Click Here.
To Learn About HD Geometry Controls Click Here.
To Learn About Rendering HD Geometry Click Here.
