This is a quick hack to convert the OpenEXR files output by Maya to TIFF. Maya outputs OpenEXR files using render-pass-specific layers, such as NX, NY, NZ for normal data. Even Maya itself doesn't actually support this, so these files are only usable in a few compositing packages. Only 32-bit float data is output. If input files contain data in other formats, it'll be converted. EXR only supports 16-bit float, 32-bit float and 32-bit int. TIFF and most authoring tools don't support 16-bit float. This is only tested in Debian, with the libilmbase-dev package.