Datacolor Spyder3 Elite Help Manual page 36

Specify Luminance Values
Help Index
Usual Setting
Enter the Luminance Values that you want to use. Or leave the fields blank and let the
application determine them appropriately for the monitor and working environment.
The Purpose of This Step
You have set Luminance Mode to Measured. In this screen you can specify the desired
values for Black Luminance and White Luminance. These values will then be displayed
during the luminance adjustment steps and the user will be prompted to adjust the
appropriate monitor control until the measured value meets the desired value.
The Long Answer
Measured Luminance Mode uses the Spyder to measure the luminance levels. The
appropriate Display controls are then adjusted to match the desired levels. Using the
Spyder to measure the levels provides more consistent settings from one calibration to
the next.
Black Luminance Choices
Measured Luminance Mode uses Target values for Black and White Luminance.
Leaving the Black Luminance unspecified causes the software to fill this blank with the
Native Black Luminance for your display (your display's blackness at its current
hardware settings). Native Black Luminance is often the most appropriate value for
your display, and on displays that do not offer a true Brightness control (one that
adjusts black luminance) Native Black Luminance is your only choice. If your Black
Luminance is adjustable, you may define a Target Black Luminance based on the
Multiple Display Tool, or a Studio Standard. In that case enter those values and
continue; or select the target containing these values.
White Luminance Choices
Measured Luminance Mode uses Target values for Black and White Luminance.
Leaving the White Luminance unspecified causes the software to fill this blank with the