Quickshot camera app for iOS saves photos straight to Dropbox
With Quickshot, you just select a photos folder in your Dropbox and start shooting. Your photos will be uploaded automatically. You don't even have to save the shots to your phone's camera roll if you don't want to.
Quickshot doesn't have a lot of bells and whistles as a camera, but if you prefer to shoot with a fancier app -- or use the iPhone's built-in Camera app for HDR -- you can still use Quickshot to select and batch-upload photos from your camera roll. Nice!
In the latest version, Quickshot added iPad 2 support and the ability to remove location tags from your photos before they're uploaded.
By the way, Quickshot is not to be confused with another, unrelated app called "Quick Shot - All in One Camera," so be careful if you're searching for it in the app store.