So is the bump value centered on RGB 128 like some other software? Meaning, black would be a negative bump and white would be a positive bump? Or does Lux use all 255 grey values for positive bumping? I notice, in LuxBlend I can not set a negative bump value.
Lux v1.0 OpenCL (64 Bit)
Windows XP64Bit SP2, nVidia 460GTX 1Gb