Back in June, Apple announced plans to discontinue development on both Aperture and iPhoto in favor of the new Photos app that will be added to both iOS 8 and OS X Yosemite in the future.
Adobe took advantage of Aperture's discontinuation, announcing its own plans to create a tool to help former Aperture and iPhoto customers transition to Lightroom, Adobe's professional photo editing software.
In the guide, Adobe notes that a simple tool remains in development, but for users who don't mind going through a detailed migration process, it's possible to switch from Aperture to Lightroom immediately. The process involves creating a full backup, exporting original photos from Aperture, exporting TIFF versions of edited Aperture photos, and importing the content to Lightroom.
Adobe's guide also includes links to learning more about how to use Lightroom and it points users towards Adobe's Creative Cloud Photography plan, which offers access to Lightroom for desktop, web, and mobile along with Photoshop CC for $9.99 per month.
Users who don't want to go through the hassle of exporting and importing files from Aperture to Lightroom can wait for Adobe's migration tool to be completed.
While Apple is ceasing development on Aperture in favor of Photos, early screenshots of the app and information from Apple representatives has suggested that some of Aperture's professional-grade features may make it into the Photos app. Photos will also include tools to allow users to import iPhoto and Aperture libraries into the new app.