Zdepth problems

I seem to be having a problem saving out a Z-Depth map in Vray 1.50.
I set up the Z-Depth the same as all the other render elements, but whilst the other elements render fine, the Z-Depth just renders completely black.

I have rendered using different file types, both hi and low dynamic ranges, both with a standard camera and the new V-ray physical camera, and I have made sure that I haven’t got anything very close or very far away from the camera which might through out the range vale. But no luck.

Any help would be appreciated.

My goof.
I’d typed one of the decimal points in the wrong place. :sweat_smile: :roll: