eeColor LUT Box User Guide

LightSpace CMS and eeColor LUT Box for accurate 3D LUT based calibration

Initial Operation

eeColor LUT Box

Before starting calibration work ensure the eeColor box is transparent when no calibration LUTs are loaded, and that there is not change in black/white levels.
With some signal configurations the black level can be lifted, and/or the peak white level reduced - this is due to incorrect EDID data communication between the signal source, the eeColor LUT box and display.

If errors are seen the 1D output LUTs within the eeColor can be used to re-scale the image path signal, as described below.


Replace the default eeColor 3D LUTs

The default LUTs that come pre-installed within the eeColor LUT Box are of no particular use for calibration purposes, and should be replaced with default/bypass LUTs.

LightSpace/ColourSpace can be used to generate the required default/bypass LUTs, and then upload them using the eeColour software application.


Replacing the 1D LUTs

The eeColor, for reasons best know to itself, has an output path that includes a first 1D LUT, followed by a 3x3 matrix, followed by a second 1D LUT. The first 1D LUT undoes a default 2.2 gamma, while the second 1D LUT reapplies the 2.2 gamma. It is a good idea to replace the 1D LUTs with Null versions, to avoid any potential issues.


Overcoming Scaling issues

If the Black/White levels are incorrect, due to EDID issues or similar, new 1D LUTs can be generated via the LUT Manipulation tools, or through use of the LUT Image for external LUT manipulation, and uploaded into the eeColor LUT box.

The Output 1D LUTs will be replaced with the re-scaling LUTs.


Uploading Calibration LUTs

When using the eeColor LUT box for calibration you will need to upload the 3D calibration LUTs generated via LightSpace CMS using eeColor's own control software, and the following procedure.

Note: The correct 3D LUT format is 65^3. The 64^3 is just for checking LUTs made with other systems that purport to be eeColor compatible.


eeColor LUT Box 3D LUT VideoScale

Depending on the display and source in use (data range, or TV level) the eeColor LUT Box may require LUTs in a particular data range.

For TV Levels, after the calibration LUT has been generated via LightSpace CMS in the normal way, use the 'Edit/LUT Manipulation/VideoScale' functions to format the LUT data as required, with video scale data within a data range LUT. See VideoScale for more information.

For data range display workflows the re-scale will not be needed.