We have a 90 second how-to video ( Click Here) and help manual (Click Here).
First make sure the iPhone camera features have not been disabled. If so other camera apps will also not work. To check for this click the settings icon on your iPhone. Then select General > Restrictions and make sure that if the restrictions are enabled that Camera restrictions switch is in the on position..
If that doesn't help, Please follow the steps below to fix this problem.
1. Delete Camera Genius from your iPhone.
2. Reboot your iPhone.
3. Go into itunes and delete Camera Genius from the itunes applications library.
4. Then re-download it direct to your iPhone from the app store on the phone. You will not be charged again since you have already bought it once.
5. Reboot one more time just to make sure everything is properly installed.
6. Use Camera Genius.
For the iPhone 3Gs auto focus works, however manually refocusing by clicking on an area of the screen does not yet work. We have corrected this problem in the version currently under development so it will be fixed in the next update which is now under review at apple, so hopefully it will be available in a few weeks after it undergoes an extensive review from apple.
At this time the ability to delete photos is not yet available to developers. I have contacted apple requesting they add this to the developer SDK. If and when they do we will add the ability to delete photos into our app. In the meantime, please use apple's built-in photo app (The icon with the sunflower entitled Photos).
It does work with all three models of the iPhone (1st generation iPhone, iPhone 3G, iPhone 3Gs). It does not work with the iPod touch since there is no camera.
Do you have anti-shake turned on? If yes, it is waiting for your hand to become steady before it takes the shot. So be sure to keep your hand steady and the shot will snap. You can also turn off anti-shake for faster picture taking.
Unfortunately apple's save routines they provide developers are not very fast. We actually tried to optimize it as much as possible by threading the saving. So you can actually begin taking the next picture sooner than that while it continues saving in the background. I have filed a request for apple and asked that they improve the speed of the save routines to make them as fast as the default camera app. If they give us access to the good save routines there own camera uses, we will change to them immediately.
Saving photos with geo-tagging and exif data is also not available to us when saving to apple's built-in camera and photo roll. We have submitted a request to apple that this be added and if they do we will definitely include it. At this time we only have the location and timestamp setting which writes text directly on the photo itself.