Adobe has released Lightroom, an iOS app that requires Adobe Lightroom 5 and a creative cloud plan.
The app allows you to edit and organize images on your iPad and automatically sync them with your desktop.
You can also share your photos with various social media sites.
iPad Notebook 
Good to see Adobe pushing for quality on the iOS / iPad platform. While they are great for imaging & illustration, I use an app called Magisto for video editing on the iPad.