Edit: After half day, my wife’s Mac started having the same problem. I have then applied the solution that I found in the Apple
Snappgrip Turns Your iPhone Into A Point & Shoot Camera @ CES 2013
CES is flooded as usual with iPhone cases but this one certainly stood out from the crowd as Snappgrip claims to turn your iPhone in to a point and shoot cameraSnappgrip makes it a lot easier for you to take pictures on your iPhone with one hand as well as bringing half press focus and a zoom button which is what you would normally expect to see on a point and shoot camera. It is worth noting that this does not use the built in camera app and you do have to download a free app from the app store.
Snappgrip is expected around February 2013 but is still a Kickstarter project and with a price point of $99.