I need help with normal maps. I have two models and would like to bring them into zbrush;one model is high resolution the other low I want to bring them into zbrush to add more detail into the higher resolution model. Then I would like to export a normal map based on the lower resolution model’s UV’s. I don’t even know if zbrush can do that, but if it can please someone let me know. 
:eek:
If you’re talking about comparing to different models and generating the normal map then no, Zbrush can’t do that. It can only compare different subD levels of the same model and generate a map based on those differences.
To do what you’re trying to do you’ll need an external program. Download Melody from nVidia’s page (or use Max 7 or something else) to compute a normal map based on two separate models.
Thanks, I knew it was a long shot, Melody really doesn’t do as well as the ATI normal mapper, I have found. I just wanted to use the High detailing in zbrush to finalize it, and I figured it out myself. I was able to cut up my High resolution model and detail pieces at a time then import them into the ati normal mapper one at a time and piece it together in photoshop, it worked great. Thanks anyway I am a happy camper now:lol:
Can someone point me in the right direction of how to create normal maps within zbrush.
I imported a low res model into zbrush and sculped a high res model from it using its subdivisions…
now what i want to do is create the normal map and height map…
thanks,
Adam
ignore my post
i got it… im a retard
I am in exactly the same boat as frenyfol step by step.
When i click create normal map inside of zbrush nothing happens. (it doesnt generate a new alpha map)
I know this happened before when I didnt store the morph target when trying to make a displacement map… BUT ive gone through the exact steps to making a displace. and then just tried to make a normal map instead and it doesnt work.
Anyone have a tutorial on Zbrush2Maya normal mapping?
(yes I am a zbrush noobie) 
The polygon model is planned to go into Maya 5.0 (or possibly 6.5 later on) and is NOT using mental ray/renderman/mayaman. And the model was purposely modelled for polys (use of tris in some places lots of “non manifold geometry”) its almost impossible to convert this model to sub d 
ive tried for the past 2 days. So a normal map is my only choice.
If the model has more than 1 subdivision level and you’re not in the highest level something should happen. Zbrush compares the current subD level to the highest level. Maybe do one more sanity check, and if that doesn’t work post a ore detailed description of your workflow.
By the way, normal maps appear in the Texture palette; not the Alpha palette. 