Intensity - NEC SpectraView 2190 User Manual

SPECTRAVIEW II - USER'S GUIDE | 

Intensity

Intensity specifies the luminance or "brightness" of white when displayed on the screen. The maximum Intensity
value of the display will depend on the color temperature of the White Point selected, the type of monitor and its
age.
The choice of Intensity value will depend on the application and viewing environment. If the display is being used in
a very bright environment and there is no visual reference (such as a proof in a lightbox), then the Intensity generally
can be selected to the maximum possible setting.
However if the display is being used in controlled lighting environment and there is a visual reference being used,
then normally a lower specific Intensity value is used. Using a specific value will allow the display to be calibrated
to the same value each time, provided it is within the capable range of the display.
Contrast Ratio
The Contrast Ratio of the display is the ratio of the measured Intensity to the measured Black Level. The Black
Level is the luminance or "brightness" of black when displayed on the screen. For LCD monitors the minimum or
native Black Level is typically fixed in ratio to the Intensity value due to the display technology.
SpectraView allows the Contrast Ratio to be selected for applications that require a specific contrast ratio. However
the calibrated contrast ratio can not be higher than the native contrast ratio, since the minimum Black Level that the
display can achieve is limited by the display technology.
For most applications the highest possible Contrast Ratio is most suitable and can be achieved by selecting Monitor
Default as the Contrast Ratio.
Specific Contrast Ratios in the range 50:1 to 500:1 can be selected.
Note: If the selected contrast ratio is higher than what the display is actually capable of achieving, then the display
will calibrate to the highest possible contrast ratio. For example if you select 500:1, but the display only capable of
say 320:1 with the current Target settings, then the resulting calibration will have a contrast ratio of 320:1.