When following your procedure @Entropy512 I also get identical files. So that’s good.
However, I get different DCPs when using DCamProf+dcptool with the “Save reference tiff” files compared to the manually exported files. Just to show, this is the data in my daylight-ref.json
file and my daylight-manual.json
file:
{
"CalibrationIlluminant1": "D50",
"CalibrationIlluminantWhitepoint1": [ 0.964218, 1.000000, 0.825202 ],
"CalibrationIlluminantSpectrum1": {
"bands": [ 300, 305, 310, 315, 320, 325, 330, 335, 340, 345, 350, 355, 360, 365, 370, 375, 380, 385, 390, 395, 400, 405, 410, 415, 420, 425, 430, 435, 440, 445, 450, 455, 460, 465, 470, 475, 480, 485, 490, 495, 500, 505, 510, 515, 520, 525, 530, 535, 540, 545, 550, 555, 560, 565, 570, 575, 580, 585, 590, 595, 600, 605, 610, 615, 620, 625, 630, 635, 640, 645, 650, 655, 660, 665, 670, 675, 680, 685, 690, 695, 700, 705, 710, 715, 720, 725, 730, 735, 740, 745, 750, 755, 760, 765, 770, 775, 780, 785, 790, 795, 800, 805, 810, 815, 820, 825, 830],
"spectrum": [ 0.0002, 0.0103, 0.0205, 0.0491, 0.0778, 0.1126, 0.1475, 0.1635, 0.1795, 0.1948, 0.2101, 0.2248, 0.2394, 0.2545, 0.2696, 0.2572, 0.2449, 0.2718, 0.2987, 0.3959, 0.4931, 0.5291, 0.5651, 0.5827, 0.6003, 0.5893, 0.5782, 0.6632, 0.7482, 0.8104, 0.8725, 0.8893, 0.9061, 0.9099, 0.9137, 0.9324, 0.9511, 0.9354, 0.9196, 0.9384, 0.9572, 0.9617, 0.9661, 0.9687, 0.9713, 0.9961, 1.021, 1.0143, 1.0075, 1.0154, 1.0232, 1.0116, 1, 0.9887, 0.9774, 0.9833, 0.9892, 0.9621, 0.935, 0.9559, 0.9769, 0.9848, 0.9927, 0.9916, 0.9904, 0.9738, 0.9572, 0.9729, 0.9886, 0.9726, 0.9567, 0.9693, 0.9819, 1.006, 1.03, 1.0107, 0.9913, 0.9326, 0.8738, 0.8949, 0.916, 0.9225, 0.9289, 0.8487, 0.7685, 0.8168, 0.8651, 0.8955, 0.9258, 0.854, 0.7823, 0.6796, 0.5769, 0.7031, 0.8292, 0.806, 0.7827, 0.7891, 0.7955, 0.7648, 0.734, 0.6866, 0.6392, 0.6735, 0.7078, 0.7261, 0.7444]
},
"ColorMatrix1": [
[ 0.953643, -0.357004, -0.072950 ],
[ -0.410386, 1.186187, 0.254533 ],
[ -0.046335, 0.106714, 0.637365 ]
],
"ForwardMatrixWhitebalance1": [ 0.499151, 1.000000, 0.582782 ],
"ForwardMatrix1": [
[ 0.644143, 0.220560, 0.099516 ],
[ 0.239640, 0.870732, -0.110373 ],
[ 0.036089, -0.215518, 1.004631 ]
],
"LUTMatrix1": [
[ 0.626814, 0.135945, 0.201459 ],
[ 0.232020, 0.706120, 0.061860 ],
[ 0.000100, 0.025139, 0.799963 ]
],
"ChromaLUT1": {
"compressFactor": 0.7,
"regularization": [ -1, 0, 0 ],
"uvL": [ ],
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"uvV": [ 0.256148, 0.504179, 0.0011865, 0.187008, 0.449138, 0, 0.19844, 0.524683, 0.00178746, 0.214899, 0.450446, -0.00543219, 0.165943, 0.490223, 0.0010432, 0.306306, 0.531742, 0.000908274, 0.184855, 0.393146, -0.00373736, 0.338988, 0.497041, 0, 0.256623, 0.437941, -0.00857786, 0.196888, 0.543592, 0, 0.269275, 0.540513, 0, 0.179094, 0.363154, -0.0175786, 0.16041, 0.535649, 0, 0.371901, 0.507395, 0, 0.24033, 0.54559, 0, 0.308669, 0.459602, -0.00154956, 0.15245, 0.444038, -0.0006, 0.0114541, 0.634127, 0, 0.00231812, 0.533935, 0, 0.00848991, 0.494405, 0, 0.0146605, 0.454884, 0, 0.0208311, 0.415363, 0, 0.0270017, 0.375841, 0, 0.0331724, 0.33632, 0, 0.039343, 0.296799, 0, 0.0455136, 0.257278, 0, 0.0516843, 0.217757, 0, 0.0580652, 0.176958, 0, 0.0699159, 0.121943, 0, 0.148955, 0.0392372, 0, 0.248142, 0.0763825, 0, 0.282411, 0.107113, 0, 0.312059, 0.133969, 0, 0.341706, 0.160823, 0, 0.371352, 0.187679, 0, 0.40104, 0.214572, 0, 0.430708, 0.241526, 0, 0.460316, 0.268459, 0, 0.489905, 0.295376, 0, 0.519494, 0.322292, 0, 0.549083, 0.349208, 0, 0.578775, 0.376219, 0, 0.612743, 0.407657, 0, 0.656642, 0.514155, 0, 0.566022, 0.5845, 0, 0.521661, 0.595231, 0, 0.482741, 0.604467, 0, 0.440656, 0.614385, 0, 0.397829, 0.621013, 0, 0.358143, 0.626991, 0, 0.318529, 0.632925, 0, 0.278934, 0.638832, 0, 0.239363, 0.644727, 0, 0.199609, 0.650648, 0, 0.159327, 0.65645, 0, 0.118084, 0.661855, 0, 0.00348584, 0.640169, 0, -0.00756235, 0.532394, 0, -0.00139039, 0.492863, 0, 0.00478023, 0.453341, 0, 0.0109508, 0.41382, 0, 0.0171214, 0.374299, 0, 0.0232921, 0.334778, 0, 0.0294627, 0.295256, 0, 0.0356333, 0.255735, 0, 0.041804, 0.216214, 0, 0.0482112, 0.175255, 0, 0.0606124, 0.118276, 0, 0.14686, 0.029459, 0, 0.254278, 0.068486, 0, 0.289125, 0.0997017, 0, 0.318773, 0.126557, 0, 0.348419, 0.153412, 0, 0.378066, 0.180268, 0, 0.407759, 0.207166, 0, 0.437434, 0.234126, 0, 0.467045, 0.261062, 0, 0.496634, 0.287978, 0, 0.526223, 0.314895, 0, 0.555812, 0.341811, 0, 0.585517, 0.368834, 0, 0.620044, 0.400824, 0, 0.666304, 0.516731, 0, 0.569011, 0.594043, 0, 0.52397, 0.604961, 0, 0.48505, 0.614197, 0, 0.44257, 0.6242, 0, 0.399331, 0.630899, 0, 0.359629, 0.63688, 0, 0.320007, 0.642815, 0, 0.280409, 0.648722, 0, 0.240836, 0.654618, 0, 0.201059, 0.660543, 0, 0.160691, 0.666357, 0, 0.11925, 0.671787, 0, -0.0044824, 0.646211, 0, -0.0174428, 0.530852, 0, -0.0112707, 0.49132, 0, -0.00510006, 0.451799, 0, 0.00107053, 0.412277, 0, 0.00724115, 0.372756, 0, 0.0134118, 0.333235, 0, 0.0195824, 0.293714, 0, 0.025753, 0.254193, 0, 0.0319237, 0.214671, 0, 0.0383572, 0.173553, 0, 0.0513089, 0.11461, 0, 0.144766, 0.0196809, 0, 0.260413, 0.0605894, 0, 0.295838, 0.09229, 0, 0.325486, 0.119146, 0, 0.355133, 0.146001, 0, 0.384779, 0.172856, 0, 0.414478, 0.19976, 0, 0.444161, 0.226727, 0, 0.473774, 0.253665, 0, 0.503363, 0.280581, 0, 0.532952, 0.307498, 0, 0.562541, 0.334414, 0, 0.592259, 0.361448, 0, 0.627345, 0.393991, 0, 0.675966, 0.519308, 0, 0.572, 0.603586, 0, 0.526279, 0.614691, 0, 0.487358, 0.623927, 0, 0.444483, 0.634015, 0, 0.400833, 0.640786, 0, 0.361114, 0.646769, 0, 0.321485, 0.652705, 0, 0.281883, 0.658613, 0, 0.242309, 0.664508, 0, 0.202509, 0.670437, 0, 0.162054, 0.676264, 0, 0.120416, 0.681719, 0, 0.20916, 0.488074, 0 ]
}
}
{
"CalibrationIlluminant1": "D50",
"CalibrationIlluminantWhitepoint1": [ 0.964218, 1.000000, 0.825202 ],
"CalibrationIlluminantSpectrum1": {
"bands": [ 300, 305, 310, 315, 320, 325, 330, 335, 340, 345, 350, 355, 360, 365, 370, 375, 380, 385, 390, 395, 400, 405, 410, 415, 420, 425, 430, 435, 440, 445, 450, 455, 460, 465, 470, 475, 480, 485, 490, 495, 500, 505, 510, 515, 520, 525, 530, 535, 540, 545, 550, 555, 560, 565, 570, 575, 580, 585, 590, 595, 600, 605, 610, 615, 620, 625, 630, 635, 640, 645, 650, 655, 660, 665, 670, 675, 680, 685, 690, 695, 700, 705, 710, 715, 720, 725, 730, 735, 740, 745, 750, 755, 760, 765, 770, 775, 780, 785, 790, 795, 800, 805, 810, 815, 820, 825, 830],
"spectrum": [ 0.0002, 0.0103, 0.0205, 0.0491, 0.0778, 0.1126, 0.1475, 0.1635, 0.1795, 0.1948, 0.2101, 0.2248, 0.2394, 0.2545, 0.2696, 0.2572, 0.2449, 0.2718, 0.2987, 0.3959, 0.4931, 0.5291, 0.5651, 0.5827, 0.6003, 0.5893, 0.5782, 0.6632, 0.7482, 0.8104, 0.8725, 0.8893, 0.9061, 0.9099, 0.9137, 0.9324, 0.9511, 0.9354, 0.9196, 0.9384, 0.9572, 0.9617, 0.9661, 0.9687, 0.9713, 0.9961, 1.021, 1.0143, 1.0075, 1.0154, 1.0232, 1.0116, 1, 0.9887, 0.9774, 0.9833, 0.9892, 0.9621, 0.935, 0.9559, 0.9769, 0.9848, 0.9927, 0.9916, 0.9904, 0.9738, 0.9572, 0.9729, 0.9886, 0.9726, 0.9567, 0.9693, 0.9819, 1.006, 1.03, 1.0107, 0.9913, 0.9326, 0.8738, 0.8949, 0.916, 0.9225, 0.9289, 0.8487, 0.7685, 0.8168, 0.8651, 0.8955, 0.9258, 0.854, 0.7823, 0.6796, 0.5769, 0.7031, 0.8292, 0.806, 0.7827, 0.7891, 0.7955, 0.7648, 0.734, 0.6866, 0.6392, 0.6735, 0.7078, 0.7261, 0.7444]
},
"ColorMatrix1": [
[ 0.926766, -0.327682, -0.077407 ],
[ -0.406383, 1.175448, 0.262975 ],
[ -0.053887, 0.111218, 0.641082 ]
],
"ForwardMatrixWhitebalance1": [ 0.499024, 1.000000, 0.583070 ],
"ForwardMatrix1": [
[ 0.638761, 0.224135, 0.101322 ],
[ 0.243657, 0.871083, -0.114739 ],
[ 0.040118, -0.212694, 0.997778 ]
],
"LUTMatrix1": [
[ 0.627036, 0.126323, 0.210859 ],
[ 0.274466, 0.660558, 0.064976 ],
[ 0.000271, 0.004110, 0.820821 ]
],
"ChromaLUT1": {
"compressFactor": 0.7,
"regularization": [ -1, 0, 0 ],
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}
}
I am under the impression that generating DCPs is a deterministic process, but I’m not 100% sure. So something is still different?
Edit: just to add, the json files I get when I assign the linear ICC profile to the reference tiffs and run those through dcamprof and dcptool, are identical to those without assigning the linear profile and using the reference tiffs.