How to get iPhone app to take good pictures using UIImagePickerController?

In my iPhone app, I use UIImagePickerController to开发者_高级运维 allow the users to take photos for use within the app. However, they always seem to come out blurry and/or unstable. What are some best practices when using UIImagePickerController to take photos on the iPhone, to make the pictures come out looking good?

Hold the phone steady.

There isn't anything in the UIImagePickerController usage that can change how blurry the resulting images are.

Maybe you are doing something odd with the images afterwards that is causing the problem ?