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I want understand the real unit use for The curves mode LAB,Chrominance a and b citation In AFP Lab editing is achieved by changing the document's Colour Format to "Lab (16 bit)" In the manuel, i read this thing "Input minimum and Input maximum are useful for 32-bit documents with out of range tonal values, but can also be used to fine tune the manipulated tonal range in 8-bit and 16-bit documents: ◦Input minimum—specify, in float, a minimum value to use as tonal input. ◦Input maximum—specify, in float, a maximum value to use as tonal output." But no, it' seems -100 + 100, ? white not -127 + 127, but for the intern code do you use a float, with unsigned byte to Float ?... I want just have a " good understanding. We found many range on the net -60 +600, I hope have an answerHave a good day I am on windows version