Apply Output Offset (during Verfication)

[Roger Breton]

I am trying to wrap my head around this ‘option’. Calibration Settings state : “Using a black output offset of 100% tries to minimize such problems.”. During my Verification, I checked off the “Apply output offset” option (see attached screenshot).  is that what causes the Black RGB = 0 0 0 to come out with a “positive Lab” values (other than 0 0 0) in the RAW Measurement data :

NUMBER_OF_SETS 51
BEGIN_DATA
1 100.000000 100.000000 100.000000 99.9988200 0.01827563 -0.01683342
2 0.00000000 0.00000000 0.00000000 2.94951565 -0.01944246 0.01390364
3 5.00000000 5.00000000 5.00000000 6.49254341 -0.00160949 0.00057948

‘Normally’, shouldn’t this value be Lab = 0 0 0? Just asking.

To me, this “better” reflects the non-zero value of my monitor black point.

So, if I check the option off, in the Verification interface, I will get RGB = 0 0 0 mapped out to Lab = 0 0 0? Me thinks so…

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[MW]

They way I see those rows determine to which level the TRC, specified by the profile in the dropdown, is interpreted.

If you want a Lab 000 black reference you will have to create a synthetic profile. Tools/advanced, black level 0 cdm2. Add it to the drop down.

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