Hello Another question! I'm trying to convert a tif (16 bits per channel) to a .pic or .hdr so I can render with it I suspect it would involve pvalue -r, but I don't know what to put for the many other options. Do I ignore the header, -h? output 16 bit words -dw or -dW ? I'm sure this is a simple operation for most of you any help appreciated! Rob Fitz