PolyPainting

From ZBrush Info

Polypainting allows painting on a model's surface without first assigning a texture map. A texture map can be created at a later time, and the painted surface can be transferred to the map.

Polypainting offers significant advantages compared to standard workflow:

• The resolution of the texture map need not be decided in advance. This is particularly valuable if you find you need more detailing on an area than you thought you would. Instead of repainting a new, larger texture map, you can simply transfer the existing surface painting to a new, larger map, with no rework necessary.
• Similarly, the UV unwrapping need not be fixed in advance. If one unwrapping proves unsatisfactory, simply create a different unwrapping and transfer the surface painting to that map.
• Removing UVs from your model frees up system resources and allows you to work with more polygons.

To see an example of PolyPainting check out the First Painting page.

To Learn About Pixel to Polygon Ratio Click Here.

To Learn how to Set up your Model for Polypainting Click Here.

To Learn About Painting with Sculpting Brushes Click Here.

To Learn About Painting with a Texture Map Click Here.

To Learn how to Convert a Texture into PolyPainting Click Here.

To Learn About Baking PolyPainting into a Texture Map Click Here.