Overlapping UVs result in streaked texture maps with paint from one part of the object ending up on a different part. If you plan to create textures in ZBrush, make certain that none of the object parts have overlapping UVs. ZBrush 4 adds a new file format similar to ZTool called ZProject (*.ZPR) which stores render and material information along with the object. Another advantage is that high polygon models can easily be turned into background images thus lowering the overhead for a 3D render. ZBrush will retain this detail when the tool goes back to 3D mode. 2.5D mode allows photographic detail to be projected onto a model. When it is in 2.5D mode the only change is that rotation is restricted to 2 dimensions. When a ZTool is in 3D mode it can be painted, rotated in 3 dimensions and sculpted. Switching to 3D mode is referred to as “Picking up from Canvas”. Switching a tool to 2.5D mode is called “Dropping to canvas”. Pressing ‘T’ on your keyboard or clicking the Edit button at the top will toggle a ZTool in and out of 3D and 2.5D mode. Once sculpting begins in ZBrush, the object being sculpted becomes a ZTool. With ZBrush 4r8, Scale has been re-labelled as Zoom 3D.
No other 3D program I’ve used behaves this way. Additionally, scaling an imported object file inside ZBrush will not affect the size of the exported object. Scaling is also essential for getting high resolution detail onto a model. I discovered that to do real zooming, I should use the scale feature instead. Prior to ZBrush 4r8, ZBrush confused me initially because the button labeled zoom only increased the size of the draw window slightly. I still think its important to keep these tips in mind before you begin. Some of these tips will make more sense in my next article when we actually begin sculpting.
I’ll try to avoid more advanced terminology until later in the series.
ZPROJECT BRUSH ZBRUSH 4 SERIES
This series begins with things that might confuse the new user in the hope of clearing the confusion. Its a cross between a painting program and a 3D modeling program hence the name ZBrush “Z” for depth and brush for painting. ZBrush doesn’t quite operate the same way as other 3D applications. When I first used ZBrush, I found many things confusing.
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