Quote - > Quote - it would be nice if i i could in photoshop make a image and then tell poser that every white line should have a seperate specular.

That's why you don't use straight white.  You use a gradient of different shades from black to white.  Making a 2-color specular map is pretty self-defeating.

I've actually found that you get better specularity on hair when you use a shader rather than an image map based specularity in the Alternate Specular node, using the Anisotropic node.  A MUST is that your hair has a GOOD Bump map attached so differentiating between strands of hair is visible.

The key thing is to plug the Transparency map into the specular, too. That way you will have specular only on the stands and not the whole plane. 

I fail to see how the Zbrush hair differs much from how most Poser hair is modeled btw. Take a look at Neftis' hair. It has at least as many individual planes as the one in your examples.

And anyway, a hair with a zillion planes and a crappy mapping can look much worse than a hair with two planes and a GOOD mapping. Look at Kozaburo's hair for an example of the latter.

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You just can't put the words "Poserites" and "happy" in the same sentence - didn't you know that? LaurieA
  Using Poser since 2002. Currently at Version 11.1 - Win 10.