[argyllcms] Re: Can Eye-one Pro failure the calibration?

The i1 Pro is only specified to measure from 0.2cdm upwards, and so all
three of these reading show a black level well under this. My personal
experience is that this limit is a realistic one, without using adaptive
integration times. I've had a negative black level returned a few times!

I have heard others state that that under 0.5cdm the reading should be
treated with suspicion, and I'd agree with this too.

I wouldn't worry about your device! If black levels are of critical concern,
use a DTP-94 colorimeter, or use the adaptive option in dispread. I've had
poorer colprof results using this how

Regards,
Sam

On 3 October 2010 21:14, Marco N. <gialandra@xxxxxxxxx> wrote:

> I have made three measurements on display with the same options, the first
> gives the black point out (too much dark), the others are OK. Is a
> instrument calibration failure?
>
> Thank you
> Marco
>
> BEGIN_DATA
> 1 0.0000 0.0000 0.0000 5.8822e-03 0.010610 9.9267e-03
> 2 5.0000 5.0000 5.0000 0.18423 0.21697 0.30100
> 3 10.000 10.000 10.000 0.67231 0.77301 0.95352
> 4 15.000 15.000 15.000 1.7458 1.9546 2.2585
> 5 20.000 20.000 20.000 3.5615 3.9371 4.2672
> 6 25.000 25.000 25.000 5.8511 6.2793 6.8429
> 7 30.000 30.000 30.000 8.6715 9.3097 10.071
> 8 35.000 35.000 35.000 11.903 12.864 14.210
> 9 40.000 40.000 40.000 16.394 17.338 19.027
> 10 45.000 45.000 45.000 20.823 22.076 23.733
> 11 50.000 50.000 50.000 26.309 28.071 30.361
> 12 55.000 55.000 55.000 31.672 33.601 36.381
> 13 60.000 60.000 60.000 37.840 40.064 42.966
> 14 65.000 65.000 65.000 44.351 47.189 51.417
> 15 70.000 70.000 70.000 52.021 55.427 60.091
> 16 75.000 75.000 75.000 59.990 63.857 67.954
> 17 80.000 80.000 80.000 68.513 73.000 79.133
> 18 85.000 85.000 85.000 77.848 82.240 90.208
> 19 90.000 90.000 90.000 87.158 92.887 100.92
> 20 95.000 95.000 95.000 97.774 103.68 113.58
> 21 100.00 100.00 100.00 111.85 118.17 129.15
>
> BEGIN_DATA
> 1 0,0000 0,0000 0,0000 0,094782 0,10385 0,10051
> 2 5,0000 5,0000 5,0000 0,40576 0,43867 0,46836
> 3 10,000 10,000 10,000 1,0571 1,1405 1,2188
> 4 15,000 15,000 15,000 2,2975 2,4849 2,6835
> 5 20,000 20,000 20,000 4,2870 4,6460 4,8614
> 6 25,000 25,000 25,000 6,7233 7,1392 7,5691
> 7 30,000 30,000 30,000 9,6575 10,293 10,893
> 8 35,000 35,000 35,000 12,938 13,904 15,089
> 9 40,000 40,000 40,000 17,476 18,427 19,907
> 10 45,000 45,000 45,000 21,943 23,198 24,583
> 11 50,000 50,000 50,000 27,490 29,237 31,233
> 12 55,000 55,000 55,000 32,913 34,834 37,286
> 13 60,000 60,000 60,000 39,137 41,341 43,936
> 14 65,000 65,000 65,000 45,698 48,527 52,404
> 15 70,000 70,000 70,000 53,348 56,763 61,085
> 16 75,000 75,000 75,000 61,292 65,156 68,886
> 17 80,000 80,000 80,000 69,744 74,237 79,984
> 18 85,000 85,000 85,000 78,929 83,336 90,906
> 19 90,000 90,000 90,000 88,126 93,813 101,46
> 20 95,000 95,000 95,000 98,523 104,39 113,93
> 21 100,00 100,00 100,00 112,33 118,57 129,33
>
> BEGIN_DATA
> 1 0,0000 0,0000 0,0000 0,10896 0,12264 0,11558
> 2 5,0000 5,0000 5,0000 0,40525 0,44296 0,50293
> 3 10,000 10,000 10,000 1,0625 1,1500 1,2508
> 4 15,000 15,000 15,000 2,3303 2,5277 2,7324
> 5 20,000 20,000 20,000 4,3409 4,7054 4,9363
> 6 25,000 25,000 25,000 6,7602 7,1927 7,6650
> 7 30,000 30,000 30,000 9,7816 10,429 11,052
> 8 35,000 35,000 35,000 13,105 14,100 15,333
> 9 40,000 40,000 40,000 17,794 18,744 20,304
> 10 45,000 45,000 45,000 22,301 23,562 25,050
> 11 50,000 50,000 50,000 27,952 29,723 31,784
> 12 55,000 55,000 55,000 33,497 35,441 37,962
> 13 60,000 60,000 60,000 39,870 42,094 44,764
> 14 65,000 65,000 65,000 46,554 49,406 53,443
> 15 70,000 70,000 70,000 54,369 57,810 62,290
> 16 75,000 75,000 75,000 62,441 66,347 70,241
> 17 80,000 80,000 80,000 71,000 75,552 81,489
> 18 85,000 85,000 85,000 80,356 84,813 92,546
> 19 90,000 90,000 90,000 89,632 95,409 103,19
> 20 95,000 95,000 95,000 100,15 106,11 115,74
> 21 100,00 100,00 100,00 114,07 120,41 131,20
>
>
>

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