ZBrushCentral

Displacement map problem/question

Hi, i’m having some problem with displacement map in Zbrush, normally when i export 32bit floating points map, it will usually export a good 32bit map like this one:
http://cB1.upanh.com/20.427.27324800.XAw0/goodtexture.jpg

But recently for some model (it seems this happen randomly) , zbrush exported a map like this:
http://cB9.upanh.com/20.427.27324798.1na0/badtexture.jpg

Here’s the original model:
http://cB0.upanh.com/20.427.27324799.Yd70/cot1.jpg

which is very bad because it didnt cover all the details i needed. I’ve checked and there’s no hidden value inside the black pixel u see in the pic, when render it just gave me a flat area.

And here’s my usual setting, i’m exporting displacement for 3dsmax
http://cB2.upanh.com/20.427.27324801.df20/setting.jpg

Does any body know a solution or the origin of this problem? because i cant seems to find much option in the displacement map option of Zbrush. Most of displacement tutorial i found are quite old, for older version of Zbrush and using Zmapper.

Also does anybody know a good setting for Vray in 3dsmax for displacement too ? i usually use Vraydisplacement mod , left the displacement amount at 1.0 and displacement offset at -0.5 and it does the job most of the time. But sometimes the offset amount must be a weird number like -0.21 for the model to render property, i have no idea why.

Thanks alot in advance !

p.s: i cant seems to upload images to Zbrushcentral right now, i dont know why, i have changed my post to direct link so anyone can view it.

Try again ? When you edit your post, click the button on the bottom. The one that says ‘Upload Image or File’.

It seems there is a technical problem with the forum today regarding uploading photos.

I cant seems to upload images to Zbrushcentral right now, i dont know why :frowning: , i have changed my post to direct link so anyone can view it.

i see weird squares on mesh. help
http://www.youtube.com/watch?v=ExXeA1Zhg9I