Mathematically right values in decomposing to LAB ?

[MarionGaff1]

@afre

1. Byte sequence should not matter since you are saving to a TIF, which is a standard format.

Thanks =)

@afre

2. If the ICC profile isn’t integrated, it means that the data is in the scanner’s native colour space and you can make a custom profile of the scanner. (It is possible that the scanner firmware or app converts the colour space internally but then why would we have the option of not including the ICC profile?)

Sorry, it is still not absolutely clear for me.
The plan is to make to custom profile of the scanner thanks to the SpyderCheckr 24 (I never dealt with profiles before). If I register all my scans with ICC integrated, then I will not be able to “replace” the ICC profile integrated by the scanner by my own “customized” ICC made with the target chart ? Or I am misunderstanding ?