Hi,
Rendering into linear EXR with a VrayZDepth RE into float, I can’t get superior than 1 values in the Z pass. I would have a real hdr Z pass to get more precise effect on long Z ranges, but it is allways in 0-1 range. Of course clamping is disable in Z (and color mapping, my diffuse is ok). So, how can I have real hdr Z pass ?
I have tried exporting a VrayZDepth render element here using psd-manager into a 32-bit PSD file and I get values below zero or larger than 1 (depending if Invert Z-Deth is checked or not). So looks right to me in terms of the render element.
Daniel
You have to set your ranges to get the values you want. For a 1:1 mapping of world scale distance set min/max to 0/1, turn clamping off and turn invert off.
Regards,
Thorsten
ok got it, many thanks !! Didn’t knew the 0/1 trick 
Anyway, without invert, my range goes from 0 to 1 and then go higher, what I wanted 