NEC SpectraView 2190 User Manual

Also see for MultiSync LCD2690WUXi: Specifications User manual Specification Dimensions User guide

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NEC SpectraView 2190 User Manual Manual pdf 27 page image

SPECTRAVIEW II - USER’S GUIDE | Information window - Color Tracking tabThe Color Tracking tab shows graphically how well the grayscale (colors from black to white) of the display isconforming to the currently selected Target. Ideally all points along a grayscale measured on the display shouldhave 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 chromaticityalong the grayscale, and/or shifts in luminance. The Delta E values are a mathematical measure of thesedeviations. A Delta E value of 1 is considered to be just perceptible to 50% of users. Values under 3 aregenerally considered excellent for display calibration. Values above 3 will be highlighted in yellow or red andmay indicate a problem with the display’s calibration.The graph shows the displays actual measured grayscale color tracking using measurements taken whilegenerating 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 showsthe luminance for each of the measured points on the grayscale.Note that since the Delta E values are calculated based on the currently selected Target. If a Target usingIntensity: Specific Level is being used, and the display was not able to actually achieve the Target’s specifiedIntensity value, then this will result in large Delta E values.Delta EAverage - 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 measurementstaken near absolute black (having a luminance of less than 5 cd/m²) on the display. Typically these valuesare not included since the low luminance can cause measurement errors that may cause artificially highDelta E values to be shown. Selecting this option will cause all measured values to be included.Show Average - shows the average Delta E value as a vertical line on the graph display.