ZBrushCentral

Can ZB produce textures as high quality as if done in Photoshop?

ZBrush Usage Questions
#1

Hello.

Iv spent a evening building a head texture up in Photoshop. This means raw photo textures, patched together, zero loss in quality.

Now when iv done Zproject from hi-res photo refferences, I get a real loss in detail, even athough My mesh is very high res.

After finnishing this texture in Photoshop, I thought id bring it into ZB and clean it up some more. So I devide my mesh in 4m polys, coverted tx to colour, then cleaned it up here and there. After putting this into a texture of equal size I saw that all my fine detail is lost.

So question is, is Zbrush able to produce high res, as good as Photoshop textures from photo refference.

Second question is, how do I know how many polys are required for a certain size texture detail, whats the formula to work this out?

The exsample below does not show a ZB Zproject, just converted from texture to colour and back again.
compare quality.jpg

Thanks.

Attachments

comparison 2.jpg

#2

Yes, ZBrush can match the level of detail. The key is that the model must have as many polygons as the texture.

Take your texture and multiply its dimensions. That’s how many pixels are in the texture. For polypaint to match (or beat) that resolution, the model must have an equal or higher number of points.

As a rule of thumb, a 1 million poly model is about equal to a 1024x1024 texture. A 3-4 million poly model will be about equal to a 2048x2048 texture. (It depends on how much of the texture space is actually used by the UV mapping.) A 10-14 million poly model is about equal to a 4096x4096 texture.

If your model has fewer polys than the texture that’s being projected onto it, the texture will lose quality.

#3

Thanks.

Does HD geometry count, as even athough I have a powerfull machine just a head at 10m polys for a 4k texture, my system realy is slow. I can no longer rotate the head mesh in this case?

Unles my windows is having problems for some reason, anything above 4-5m polys is un-controlable to rotate. What dont help is I have a 24"monitor. My doc is 960 x 720.