Canvas Help (depth map)

asbrainiac_d0d9ea3447

So I'm trying to use iRay to capture a depth map of a figure, with the closest parts white, going to black at the most distant parts. Ultimately my objective is to use this depth map to create a displacement map.
So far I've learned to render to a canvas. I can create an EXR file, which I then open in GIMP. However, this file is just pure white and black. Adjusting exposure in GIMP does not reveal any additional greyscale details. I looked around and found that the default exposure level in Daz is likely too high. I tried altering exposure levels in powers of 2, but nothing changed the final result. Just a white silhouette against a black background (I went up to 240 exposure value).

Anyone know how to do what I'm trying to do?

WendyLuvsCatz

it's really extreme need to lower the exposure heaps more like 16 one person suggested