I am trying to take this head i have modled from 3ds max into zbrush, to do some normal maps on it. However the problem i am having is with how zbrush smooths my mesh, when it subdivides. I lose most my sharp edges and alot of detail in the ears because of it.
Is there anyway to fix this, maybe editting some smooth settings? Take into account i am a zbrush noob and will need step by steps. Here are some pics (orignal on left)


Thanks 