zbrush scaling WTF

Ruz

I have been noticing that all my various zbrush models are at different scales. been zbrushing since about 2004 and I have always done my work in real size ie cm , so a head would be in real world size BUT I notice now every old file that i load varies in size inside zbrush enormously.

I am also starting to think that brushes in zbrush work strangely if your scales are off by a large amount. anyone confirm this.

I don't suppose there is any easy way to fix these issues?

dtschultz

Yeah, I've noticed this as well. I recently had two meshes that I know were the same size in Max (and were also pretty small), but for some reason they were huge in Zbrush. I only realized this because the surface noise wouldn't work correctly and so I tried scaling them down considerably and they worked fine. I don't know what causes this, but I'd love to hear if anyone has a solution.

bugo

when using maya inches, I get the same issues. I usually end up scaling back 2.54 and everything works fine.

cryrid

Goz might preserve the scale, otherwise I think out might use the currently loaded subtool for a reference.

Brushes, dynamesh, and more do work better with more natural scales in zbrush. you can use the tool preview to get a glimpse at how big or small the tool is. For best results, if you don't mind the size changing , use the unify deform to instantly scale it better

Ace-Angel

Once you use GOZ, make sure your 'scale' in export is set to 1. This will ensure you will get, WITH GOZ, a 1:1 import export, if the number changes, start a new document. As of R3, you shouldn't get any fluctuations with the scale since it was fixed.

I suggest not using the old method of import/export OBJ formats, since those have a whole set of bugs of them own, the safest solution for an old import/export is to do this.

Create a Cube Mesh in ZB -> Divide it a couple of time -> Check to see if Scale in export is set to 1 -> Import your models (OBJ, etc) -> Save document (I suggest ZPR).

Now close ZB and open it again, open the ZPR project, if the scale didn't change, then you're good to go.

Honestly, GOZ is faster.

Ruz

yeah unify works , but when i have 20 30 subtools they don't always resize in relation to each other ie they all end up in the same location. I could merge all then resize, then break thme apart again.

tool preview is handy, cheers for that cryid - some of the heads I did are really massive in zbrush.

Ruz

goz is a bit weird, flips my texture maps upside down ie the uv's themselves. i guess you can mess with this setting.

I still use import export obj. You can avoid that vertex order bug by converting your mesh in 3dsmax to editable mesh, stick and edit poly on top and then export.

cryrid

In the case of multiple subtools, you could just use the size deform on the main subtool using the preview window as a judge. Basically just aim to get it so that you can see the entire model within the preview as if it were framed.