Uwaga długie.

Jest sobie taki delikwent: CRT 22", Viewsonic Profesional Series
P225f. Niby skalibrowany przeze mnie. Poniżej są wyniki sprawdzania
Argyllem punktu pracy monitora od włączenia do nieco ponad godziny
pracy, z krokiem co 10 minut. Ja wiem że to się musi co nieco nagrzać,
ale zostałem zaskoczony tym, że punkt czerni na zimno jest o wiele
wyższy niż po nagrzaniu (i to niestety na niektórych zdjęciach widać).
Dla mnie to wygląda, jakby monitor startował z wysokiej jasności, a w
trakci pracy sukcesywnie ją obniżał. Czy to tak bywa, czy to jest
jakaś anomalia?
I pytania dodatkowe:
Którą temperaturą barwową z tego zestawienia mam się najbardziej
przejmować (a są trzy)? Jakie te wartości DE są (normalne, takie
sobie, dobre) i jak mocno się nimi przejmować?

Założony punkt pracy: 6500K, gamma 2,2.

Po włączeniu:
===============
C:\argyll\bin>dispcal -v -K -yc -p.5,0,1 -t 6500 -gs -qh -r
Current calibration response:
Black level = 0.21 cd/m^2
White level = 91.18 cd/m^2
Aprox. gamma = 1.79
Contrast ratio = 429:1
White chromaticity coordinates 0.3043, 0.3270
White Correlated Color Temperature = 6996K, DE to locus = 8.5
White Correlated Daylight Temperature = 6992K, DE to locus = 4.8
White Visual Color Temperature = 6621K, DE to locus = 8.1
White Visual Daylight Temperature = 6792K, DE to locus = 4.6

Po 10 min:
===============
Black level = 0.15 cd/m^2
White level = 82.46 cd/m^2
Aprox. gamma = 1.91
Contrast ratio = 557:1
White chromaticity coordinates 0.3077, 0.3302
White Correlated Color Temperature = 6766K, DE to locus = 8.3
White Correlated Daylight Temperature = 6762K, DE to locus = 4.6
White Visual Color Temperature = 6430K, DE to locus = 8.0
White Visual Daylight Temperature = 6590K, DE to locus = 4.4

Po 20 min:
===============
Black level = 0.12 cd/m^2
White level = 74.94 cd/m^2
Aprox. gamma = 2.02
Contrast ratio = 644:1
White chromaticity coordinates 0.3098, 0.3309
White Correlated Color Temperature = 6646K, DE to locus = 7.5
White Correlated Daylight Temperature = 6644K, DE to locus = 3.6
White Visual Color Temperature = 6357K, DE to locus = 7.2
White Visual Daylight Temperature = 6515K, DE to locus = 3.5

Po 30 min:
===============
Black level = 0.11 cd/m^2
White level = 70.39 cd/m^2
Aprox. gamma = 2.10
Contrast ratio = 632:1
White chromaticity coordinates 0.3106, 0.3311
White Correlated Color Temperature = 6603K, DE to locus = 7.2
White Correlated Daylight Temperature = 6601K, DE to locus = 3.2
White Visual Color Temperature = 6333K, DE to locus = 6.9
White Visual Daylight Temperature = 6490K, DE to locus = 3.1

Po 40 min:
===============
Black level = 0.11 cd/m^2
White level = 68.37 cd/m^2
Aprox. gamma = 2.15
Contrast ratio = 648:1
White chromaticity coordinates 0.3115, 0.3309
White Correlated Color Temperature = 6553K, DE to locus = 6.5
White Correlated Daylight Temperature = 6551K, DE to locus = 2.4
White Visual Color Temperature = 6312K, DE to locus = 6.3
White Visual Daylight Temperature = 6470K, DE to locus = 2.3

Po 50 min:
===============
Black level = 0.10 cd/m^2
White level = 67.21 cd/m^2
Aprox. gamma = 2.16
Contrast ratio = 675:1
White chromaticity coordinates 0.3114, 0.3311
White Correlated Color Temperature = 6557K, DE to locus = 6.7
White Correlated Daylight Temperature = 6556K, DE to locus = 2.6
White Visual Color Temperature = 6311K, DE to locus = 6.4
White Visual Daylight Temperature = 6468K, DE to locus = 2.5

Po 60 min:
===============
Black level = 0.10 cd/m^2
White level = 66.43 cd/m^2
Aprox. gamma = 2.18
Contrast ratio = 682:1
White chromaticity coordinates 0.3114, 0.3315
White Correlated Color Temperature = 6556K, DE to locus = 7.0
White Correlated Daylight Temperature = 6555K, DE to locus = 3.0
White Visual Color Temperature = 6298K, DE to locus = 6.7
White Visual Daylight Temperature = 6453K, DE to locus = 2.8

Po 70 min:
===============
Black level = 0.10 cd/m^2
White level = 65.85 cd/m^2
Aprox. gamma = 2.19
Contrast ratio = 672:1
White chromaticity coordinates 0.3122, 0.3315
White Correlated Color Temperature = 6512K, DE to locus = 6.5
White Correlated Daylight Temperature = 6510K, DE to locus = 2.3
White Visual Color Temperature = 6277K, DE to locus = 6.2
White Visual Daylight Temperature = 6432K, DE to locus = 2.2
The instrument can be removed from the screen.

Po 70 min: ale to jest przy ,,odkalibrowaniu''
===============
C:\argyll\bin>dispcal -v -K -yc -p.5,0,1 -t 6500 -gs -qh -R
Black level = 0.08 cd/m^2
White level = 66.71 cd/m^2
Aprox. gamma = 2.85
Contrast ratio = 816:1
White chromaticity coordinates 0.3122, 0.3337
White Correlated Color Temperature = 6497K, DE to locus = 7.8
White Correlated Daylight Temperature = 6495K, DE to locus = 3.9
White Visual Color Temperature = 6215K, DE to locus = 7.5
White Visual Daylight Temperature = 6364K, DE to locus = 3.8
Effective LUT entry depth seems to be 8 bits

--
Grzegorz Krukowski
Ministerstwo Głupich Kroków ostrzega:
lustrzanka albo zdjęcia - wybór należy do Ciebie!