Luminar Neo doesn't come with HDR Merge as a standard feature of the basic package, so if you want to use this, you'll need to purchase it and add it as an extension. If you're using the standard version of Luminar Neo, you can add the HDR Merge extension to the suite for £39, while paying £79 will grant you access to all extensions. Users who have already signed up for the full package but haven't yet added the HDR Merge extension can easily do so from the list of extensions in the software.