You should try the #privatecamera from #ncryptedcloud (www.ncryptedcloud.com) . Full disclosure, I work for the company. The app is a Privacy, Security and Collaboration application layered on top of Dropbox (Skydrive and Googledrive coming in 2 month) . We are on OSX, Windows and IOS. Android coming in 6 weeks.
It is free for consumers and you can take Private Encrypted Photos that are NOT stored on the Camera roll. They are stored encrypted in the cloud and encrypted on a private camera roll accessible only through our PIN protected application.