There seems to be something wrong with the vector displacement of vray

Using the map in the file, I can’t get a correct ear displacement. I don’t know if it’s my wrong setting
Ear.rar (755 KB)

Hello @123456_1 ,

The attached texture works just fine on my end. You might need to bump up the displacement amount to see the displacement. Please check this screenshot.

As I screenshot, the left is made with the c4d displacement modifier, and the right is made with the vray displacement. Obviously, the vray displacement is incorrect

Is your test result correct

Did you create the vector displacement in ZBrush?
Unfortunately V-Ray does not support ZBrush vector displacement.
I’ve been requesting support for quite some time, but Chaos seems reluctant.

Okay, I see

Here is how to use ZBrush vector displacement with V-Ray: Chaos Docs

is this not working for you?

have you actually tried it?
This tutorial does not have an explicit Switch value. Why?
There should be no Switch value that fully reproduces the ZBrush Diagnostic Files (which would be spherical).