displacement issue

[rpmaguire]

Hello,
Im trying to figure out why, this whole mesh is displacing...

The displacement map is a .jpg done in photoshop with a grey of RGB : 128. Only the thin black lines should be displacing

I have tried RGB and greyscale .jpg..

Ryan

[grahamef]

It's the middle gray that's causing that. You need to connect a Scalar Change Range between the Color to Scalar's out and the Displacement port so that the middle gray background gets mapped to 0 and the black to negative values.

BTW I really wouldn't use JPGs for this as the lossy compression can cause nasty artefacts. Use a lossless format like PNG.

[rpmaguire]

Thank you!
It worked fine..