oiiotool --stats -v /dev/shm/1.exr Reading /dev/shm/1.exr /dev/shm/1.exr : 4096 x 2048, 3 channel, float openexr channel list: R, G, B chromaticities: 0.639999, 0.33001, 0.300004, 0.600003, 0.150002, 0.0599972, 0.3127, 0.329 compression: "zip" PixelAspectRatio: 1 screenWindowCenter: 0, 0 screenWindowWidth: 1 oiio:ColorSpace: "Linear" oiio:subimages: 1 Stats Min: 0.005371 0.006256 0.006348 (float) Stats Max: 117.000000 106.500000 104.500000 (float) Stats Avg: 0.746420 0.699325 0.674529 (float) Stats StdDev: 3.869811 3.841790 3.957525 (float) Stats NanCount: 0 0 0 Stats InfCount: 0 0 0 Stats FiniteCount: 8388608 8388608 8388608 Constant: No Monochrome: No this is for gimp exported EXR cingg exported tiff says: Reading /dev/shm/1.tif /dev/shm/1.tif : 4096 x 2048, 4 channel, float tiff channel list: R, G, B, A compression: "zip" Orientation: 1 (normal) planarconfig: "contig" oiio:BitsPerSample: 32 tiff:Compression: 32946 tiff:PhotometricInterpretation: 2 tiff:PlanarConfiguration: 1 tiff:RowsPerStrip: 1 tiff:UnassociatedAlpha: 1 Stats Min: 0.265371 0.266256 0.266348 1.000000 (float) Stats Max: 1.000000 1.000000 1.000000 1.000000 (float) Stats Avg: 0.630706 0.600794 0.582030 1.000000 (float) Stats StdDev: 0.221808 0.214916 0.202718 0.000000 (float) Stats NanCount: 0 0 0 0 Stats InfCount: 0 0 0 0 Stats FiniteCount: 8388608 8388608 8388608 8388608 Constant: No Monochrome: No ==== example usage from https://openimageio.readthedocs.io/en/latest/oiiotool.html wow, so oiiotool in itself a bit like imagemagick :) might make preparing some image sequences easier ... also, guess we better to note in manual that even if cingg outputs fp32 exr/tiff values there are normalized to 0-1.0f as far as we can see.