iPhoto ’11: The Macintosh iLife Guide to using iPhoto with OS X Lion and iCloud

Manual or Autoflow?

When you create a book, iPhoto automatically lays out the book, choosing a page layout for each page and adding photos. Along the way, iPhoto adds variety by mixing various page layouts throughout the book.

iPhoto always creates a book with at least 20 pages—the minimum a book can contain. But iPhoto will create as many pages as needed to place the photos that you selected before creating the book.

This entire process is called Autoflow, and it’s a great way to get quick results.

How Autoflow works. iPhoto doesn’t just randomly spew photos onto pages; rather, iPhoto follows a few rules as it flows your photos.

For example, iPhoto tries to avoid putting photos taken on different days on the same page. And if you’re creating ...