OCIO-based color management is a technology preview that brings the benefits of a modern color pipeline, assuring accurate reproduction of colors and compatibility across a variety of applications.
OpenColorIO is an industry-standard, open-source color management solution integrated in many content creation, editing, and finishing applications. It uses configuration files to define the color spaces used for input, rendering, display, and output, as well as to automate the transformations between these spaces. 3ds Max's default configuration is based on ACES, the Academy Color Encoding System, or you can use a custom config instead.
You set up color management on the Color Management panel of the Preference Settings dialog. This technology preview is an early chance to test and provide feedback on advanced color management capabilities. Note that there are limitations, and not all planned features have been implemented. Please submit any technical problems, questions, or other feedback on our forum.
The legacy gamma workflow is still the default for new scenes (unless you change your system settings), and existing scenes continue to work as before.