Came across this free app while looking through a magazine.
http://www.crazybump.com/
Let me guess, october issue of 3DWorld ;)
I also use it for my image based displacements, it works really fine...especially when you put a colour adjust shader between your image map shader and surface shader.
Then you can control the contrast of the image map and thus have more control over spikes and roughness of displacement in combination with the displacement factor.
Wow, that's awesome :). Stupid non-Mac-supporting developers, though... >:( :P.
Thanx for sharing mate...always good to find new utilities in my book.. ...
nice, but Im with o_b ... not for the Mac ... :(