CIE Conversion

Change the standard observer and illumination of data sets

CIE Conversion Main Window

CIE Conversion: change the Observer from a standard 2 Degree to a 10 Degree observer. The Illumination can be changed from the standard D50 light source. Printer profiles are typically created for D50 viewing environment.

Resulting file: applying the CIE Conversion tool results in a measurement file that only contains Lab values. Spectral data is converted to Lab data using the observer and illumination specified. Create profiles with this file.

Tip: apply CIE Conversion last due to the Lab data conversion

The Illumination drop-down menu contains several options.

Choose one of the predefined viewing conditions, Kelvin, XYZ or Emission. Values can also be manually entered.

Emission: choose spectral emissions readings of a specific light source by either loading or dragging and dropping a CxF3 or text file. ColorAnt can also extract data from a measurement file (the white point) and display the value.

Examples: environmental lighting requirements, such as an art gallery with incandescent lights (corresponding roughly to light source A), or an exhibition hall where the lighting conditions could be fluorescent lighting.

Important: CIE Conversion can only be used with spectral data.

Multiple readings of the same light source: ColorLogic recommends averaging the measurements using the Redundancies tool first, saving, then loading the emission reading in the CIE Conversion tool.