OS X Yosemite How-To: Move your iPhoto or Aperture library to Photos
Apple’s latest app Photos is now available for free as part of OS X 10.10.3 for Mac. The new app is the future of photo management from Apple with support for iCloud Photo Library, burst photos, slow-mo and time lapse videos, and more. Here’s how to migrate your photo library to the new Photos app from iPhoto or Aperture, both of which will no longer receive support for software updates going forward: