.. meta:: :description: Overview of the LUT management docker. .. metadata-placeholder :authors: - Wolthera van Hövell tot Westerflier - Scott Petrovic :license: GNU free documentation license 1.3 or later. .. index:: Look Up Table, ! LUT Management, OCIO .. _lut_docker: ============== LUT Management ============== .. image:: /images/dockers/LUT_Management_Docker.png The Look Up Table (LUT) Management docker controls the high dynamic range (HDR) painting functionality. Use OpenColorIO Use Open Color IO instead of Krita's internal color management. Open Color IO is a color management library. It is sometimes referred to as OCIO. This is required as Krita uses OCIO for its HDR functionality. Color Engine Choose the engine. Configuration Use an OCIO configuration file from your computer. .. note :: Some system locals don't allow you to read the configuration files. This is due to a bug in OCIO. If you are using Linux you can fix this. If you start Krita from the terminal with the ``LC_ALL=C krita`` flag set, you should be able to read the configuration files. Input Color Space What the color space of the image is. Usually sRGB or Linear. Display Device The type of device you are using to view the colors. Typically sRGB for computer screens. View -- Components Allows you to study a single channel of your image with LUT. Exposure Set the general exposure. On 0.0 at default. There's the :kbd:`Y` key to change this on the fly on canvas. Gamma Allows you to set the gamma. This is 1.0 by default. You can set this to change on the fly in canvas shortcuts. Lock color Locks the color to make sure it doesn't shift when changing exposure. May not be desired. Set white and black points This allows you to set the maximum and minimum brightness of the image, which'll adjust the exposure and gamma automatically to this.