I have noticed that sometimes camera loses focus when shooting closely. It is hard to do close shot and takes several tries and different angles. I can see that auto-focus is precise but it fails to lock and gets blurry. Why would it return to be blurry if auto-focus is right? If there was a way to have more control over focus and lock it when it is focused enough so it won't lose lock and gets blurry. I heard that Camera360 app takes care of macro but it does not make any difference.