Using the LUT tools

You can undo edits and compare different versions of a histogram for the same image data using the tools on the LUT Editor.

When the LUT Editor is opened, Focus stores a copy of the histogram as a smaller version and displays it to the right of the LUT editor in the preview window. When you make changes, you can switch between the previous and the edited LUT using the Toggle option. You can also copy the edited LUT and save it as a temporary backup.