Shrinkage when Zbrush morph applied

bwise1701

I'm noticing that when I apply a morph from Zbrush I'm getting shape shrinkage - even in areas I didn't modify. In this image you can see the ear shrinks (the purple is the ear without morph)

Any idea why this would happen?

 

bwise1701

Ok, new data - this appears to happen when I do this:

GoZ mesh (export at current resolution not checked - subdiv level 1 on mesh)

In Zbrush - mesh comes in at Daz level 0 (looks coarse like subdiv hull) - I subdivide once - sculpt - then set level back to 1 (Zbrush level 1 - lowest res) 

GoZ back to Daz  apply morph see shrinkage.

This Does NOT happen if I just sculpt on the low res mesh and do not subdivide.

Anyway to subdivide in Zbrush and not have the shrinkage?

 

Male-M3dia

bwise1701 said:

Ok, new data - this appears to happen when I do this:

GoZ mesh (export at current resolution not checked - subdiv level 1 on mesh)

In Zbrush - mesh comes in at Daz level 0 (looks coarse like subdiv hull) - I subdivide once - sculpt - then set level back to 1 (Zbrush level 1 - lowest res) 

GoZ back to Daz  apply morph see shrinkage.

This Does NOT happen if I just sculpt on the low res mesh and do not subdivide.

Anyway to subdivide in Zbrush and not have the shrinkage?

 

Do not subdivide the mesh when you make your base morph as this is the result you will get. Subdivision affects the whole mesh, including the parts you didn't touch. You subdivide only to make your details (once you are satisfied with the morph you made in low poly) and export as a normal map. 

Richard Haseltine

Try sending the emsh to ZBrush, dividing, and sending back to DS as a morph - that should give a morph that does nothing but the shrinking. Leave it at 0, send the mesh across, do your real sculpting, and before sending that back to DS set the shrinking morph to 1 - I think DS should subtract the shrinking effect, leaving only the sculpting (if not you may need to enable the advanced controls and set Reverse Deformations to on).

Male-M3dia

Richard Haseltine said:

Try sending the emsh to ZBrush, dividing, and sending back to DS as a morph - that should give a morph that does nothing but the shrinking. Leave it at 0, send the mesh across, do your real sculpting, and before sending that back to DS set the shrinking morph to 1 - I think DS should subtract the shrinking effect, leaving only the sculpting (if not you may need to enable the advanced controls and set Reverse Deformations to on).

I doubt that will work, subdividing will change the deltas over the whole mesh. The base mesh should not be subdivided at all. This also goes for dynamic subdivision as well.