For the CH version click here
After de-mosaicing the RAW files, Capture One automatically selects the recommended default ICC color profile and applies an appropriate tone curve setting for all RAW image files from recognized camera models. These color and tone settings define the overall look for the camera or digital back.
The processing engine can also have an effect on the resultant image. Although the engine is upgraded for each new version of Capture One that does not necessarily mean that the color rendering has changed. While all subsequently imported images will be rendered with the new engine, if some of the new tools in the latest version rely on the new engine, then you may not be able to use them on the previously imported and adjusted images without updating them. In general, it is not recommended, especially when they have been processed or exported to a final file. However, when there is a need to do so, it is suggested that you clone the earlier images and re-render them with the new engine.
When updating to a new version, you will not be prompted to update your existing images but you will be asked to migrate the database of any older Catalogs or Sessions that you open. Although this has no impact on image quality, you will benefit from any advances made to the reliability and performance of the management system.
If you are using Capture One Cultural Heritage, the Base Characteristics tool has an additional Mode drop-down menu and specialized Cultural Heritage ICC Profiles.