zbrush 4R5 and 3dmax 2012.
I checked many threads about problems with 32 bit displ maps, but i have another one not listed anywhere… i tried changin the shift value in vray displacement, and everything that was said about zbrush and vray options… still my renders look like this (see image below).
settings :
32 bit
3 channel
mid value 0 (this value is recomended as you all know, when using 0.5 get all information i need in black areas but at the cost of white areas… this should not work like that, or is it only way to get 32 bit displace working correctly? if so then is zbrush lying with midpoint value?)
scale 1
TIFF format
the good thing is i dont have to play with amount/shift values.
When rendering 16 bits tiff, i have more information in black areas:
i had to change levels in PS to make them usable in vray(see red circle on image, it is after the change)
When i played with vray displacement settings it turned out that 3D mapping, gives poor results, even when playing with shift and amount values i cant get the eye folds and skin bumps to show properly, 2D mapping gives good results but i know that 3D mapping is more accurate and works better when you want to show detailed reflections/shadows on your model using displacement.
2D mapping results:
So summing up, rendering 32 bit displacement cuts my black values but i dont have to play with shift and amount, i just type 1 and it works.
16 bit/32 bit displacement with midpoint at 0.5 gives me all information in texture, but i cant get good results in vray displacement, its either small details not showing, or the mesh looks a lot different from my zbrush model.
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