For my work on vision and stereo range data I had to create some test cases in Softimage XSI. Unfortunately the z depth channel is rendered to this Zpic format that no many program can read. I know there is one tool out there which suppose to convert Zpic to other formats such as jpeg or bmp, but there is a bug in it cause clamping of the ranges. After some trails and errors, I figured out the format (they are just dump of floats). So here is a converter I coded up, with a "nice" GUI :).