Fully optimized for Retina display
• Optimized Viewer allows you to see more of your high-resolution images onscreen with pixel-for-pixel accuracy
• Displays razor-sharp thumbnails in Browser

Aperture and iPhoto Unified Library
• Share one photo library across both applications
• No need to import, export, or reprocess photos from one app to the other
• Faces, Places, albums, web sharing, and more work with both applications
• Adjustments done in either app are non-destructive and visible in the other

Organize photos using Faces and Places
• Use face detection and recognition to organize your photos by the people in them
• Explore photos based on where you took them, using robust GPS support
• Drag photos to an interactive map to add location data easily

Perfect images with Brushes and Effects
• Retouch photos nondestructively using edge-aware brushes
• Handle the most common touch-up tasks with a set of 10 Quick Brushes
• Choose from dozens of ready-to-use effects or create and share your own effects
• See results of any effect in a live preview window before applying it to an image

Create stunning multimedia slideshows
• Use professionally designed themes to weave together photos and HD video clips
• Add text to slides using your choice of fonts, styles, and colors
• Build a layered soundtrack with location audio clips and music tracks

Photo Stream
• View and automatically import recent photos taken on your iOS devices
• Automatically send newly-imported photos to all your iOS devices
• Subscribe to other people’s shared photo streams, or create your own streams to share with friends and family
• View and add comments and "likes" to photos in any shared stream

Requirements: OS X 10.7.5 or later