Auto focus not working

Hello, Most probably your camera has a lens assembly problem. The lens mechanism is composed out of tiny servomotors and moving parts that can easily get damaged if the camera receives a mechanic shock. Sometimes simply out of nowhere some of the small plastic components may become loose and affect other componets near it. In your case, it's pretty clear that the lens can't seem to move corectly in order to achive best focal lenght. Maybe something is obstructing them in some way. Because of that the camera only achieve a correct sharp picture at a fix autofocus point. When the lens try to move away from that point, something obstruct them or they have become decalibrated and the picture gues blurry. The only way to fix this would be to send it to a qualified service center because the lens assembly is very fragile and small. Some times they need to use a microscope and small specialised tools in order to realign the lens. Other then that, there could be a problem with your camera firmware but also this will lead you to a service center in order to have the firmware rewritten. There are some firmware versions on the internet but I don't recomand you try to update the firmwware yourself. Some of this versions are "cracked" or from uncertain sources and if you fail this upgrade you may render the camera useless.