To use the ACES CTL tools within LightSpace CMS you will need to download the latest ACES version .zip file from HERE - select the desired ACES version and download the .zip file.
Extract this .zip file, and note the location of the folder than contains the 'ACESlib.xxxxxxx.ctl' files, within the .ctl folder.
An environment Variable will need to be set on the LightSpace PC to point to the location of the above folder. To edit the Environment Variable right click 'This PC' and select 'properties', then select 'Advanced system settings'. On the bottom of the window that opens select 'Environment Variables', and make a new variable, probably best just for the specific 'User'. Call the Variable name 'CTL_MODULE_PATH', and point to the location of the folder located above, using the Variable value entry.
Re-start LightSpace CMS if it was already running...
Note: there is a bug in ACES v1.0.3, which means ACES v1.0.2 should be used until this bug is fixed by the Academy.
In ACES workflow the LMT sits before the RRT, and applies a creative 'Look' to the image path.
|The IDT (Input Device Transform) is Camera manufacturer defined, and maps the captured image into ACES||The LMT (Look Modification Transform) is used to apply a 'Look' to the image that is potentially beyond the normal colour manipulation capabilities of any applied grading - such as Film Look Emulation||The RRT (Reference Rendering Transform) applies an ACES defined 'Look' to the image based on a Reference Display Device (RDD), with theoretical (impossibly large) colour gamut and dynamic range||The ODT (Output Device Transform) maps the image from its RDD format to the ODT defined display, such as Rec709, P3, etc|
LMT Generation is a basic three stage process, with additional stages potentially required depending on the Look LUT being used.
|RRT + ODT||Look LUT||InvODT + InvRRT|
|ACES||Step one is to combine the standard ACES RRT and the desired ODT into a single concatenated LUT/CTL||The Look LUT needs to be in the correct format for the ACES ODT used in the workflow||The last stage is to combine the Inverted version of the ODT used in stage one and the Inverted RRT, both standard ACES CTL files, into a single concatenated LUT/CTL||ACES|
The workflow takes the standard ACES input, uses the RRT+ODT to convert the expected input into the correct format for the Look LUT, and then uses the InvODT+InvRRT to convert back into ACES.
With the RRT + ODT and InvODT + InvRRT combined into single elements, and the Look LUT in the correct format to match the ODT being used, all three elements can be combined into a single LMT CTL.