When trying to sync photos from my Apple Aperture library to my new iPad, I found iTunes thought most Aperture projects were empty and thought I would give you my lesson learned (and I suspect this is true for the iPhone and iPod Touch as well).
the short answer: Update/generate Aperture previews!
The iPad has the ability to sync photos with both iPhoto and Aperture on the mac. Cool I thought! Ok, it is cool, but you have to realize that the sync only works with PREVIEW files from Aperture. If you don’t have Aperture set up to build preview files, then when you select the projects in the iTunes sync, you’ll see zero next to the project name… meaning there aren’t any photos to sync. But yet you know there are photos in the project! Well, that may be because you haven’t asked Aperture to build previews for your project.
So, how do I fix this?
First, update your preferences in Aperture:
2) If you didn’t have the setting turned on to generate the previews (and I suspect you probably wouldn’t be reading this if you did have previews), you’ll need to go into Aperture and ask it to generate previews for the projects you want to import to your iPad. Note that since the iPad resolution is 1024×768, there isn’t much need to generate the huge previews, so go with the smaller options.
So there ya go – if you’re not getting the photos you thought you should, check the previews.
(Photo credit: Mitch Aunger)