An Info window for your Aperture library opens. By default, it's named Aperture Library and is in the Pictures folder of your home folder. Select your Aperture library in the Finder.If you migrated your library to Photos after installing macOS Catalina 10.15 but before updating to macOS Catalina 10.15.1, complete these steps before continuing:.Your Mac must be using macOS Catalina 10.15.1 or later. Install the latest macOS Catalina updates.Starting with macOS Catalina, Aperture is no longer compatible with macOS. If you upgraded to macOS Catalina before migrating your library to Photos, follow these steps: When Photos shows the photos from your Aperture library, migration is complete. If your Aperture library isn’t listed, click Other Library, then locate and choose your library. Open the Photos app, then choose your Aperture library when prompted, as pictured above. If you aren't prompted to choose a library, press and hold the Option key while opening Photos.Quit Aperture when processing is complete. To follow its progress, choose Window > Show Activity from the menu bar. Aperture now generates full-size previews for every photo in your library.Press and hold the Option key, then choose Photos > Generate Previews.Choose Edit > Select All to select all of your photos.Click the Browser layout button in the toolbar, so that all photos are shown as thumbnails.For example, click the first project listed, then press and hold the Shift key while clicking the last project. From the list of projects in the Library inspector, select all of your projects.Choose Aperture > Preferences, click the Previews tab, then change the Photo Preview setting to Don't Limit.Follow these steps if you're using macOS Mojave or earlier:

Lightroom support