NEC SpectraView II Guia Del Usuario página 33

32 | NEC SPECTRAVIEW II - USER'S GUIDE
Information window - Color Tracking tab
The Color Tracking tab shows graphically how well the grayscale (colors from black to white) of the display is conforming
to the currently selected Target. Ideally all points along a grayscale measured on the display should have the same
white point (chromaticity) and should follow the luminance curve of the Target.
Deviations from this ideal can result in grayscale color tracking errors which can be seen as shifts in chromaticity along
the grayscale, and/or shifts in luminance. The Delta E values are a mathematical measure of these deviations. A Delta
E value of 1 is considered to be just perceptible to 50% of users. Values under 3 are generally considered excellent for
display calibration. Values above 3 will be highlighted in yellow or red and may indicate a problem with the display's
calibration.
The graph shows the displays actual measured grayscale color tracking using measurements taken while generating
an ICC/ColorSync monitor profile of the display.
The horizontal axis shows the Delta E values for each measured point on the grayscale. The vertical axis shows the
luminance for each of the measured points on the grayscale.
Note:
Since the Delta E values are calculated based on the currently selected Target, if a Target using Intensity: Specific Level is
being used, and the display was not able to actually achieve the Target's specified Intensity value, then this will result in large
Delta E values.
Delta E
Average - shows the average of all the calculated Delta E values.
Maximum - shows the maximum of all the calculated Delta E values.
Include Dark Values - selects if the graph and average Delta E value calculation include measurements taken near
absolute black (having a luminance of less than 5 cd/m²) on the display. Typically these values are not included