I'm wondering if anyone can give me any advice on troubleshooting autofocus problems.
This afternoon I was using my D610 with an AF-S Nikkor 28-300 zoom attached. It's the lens I use for general purpose and has actually been on the camera for a few months. All was going well as usual until about half way through my walk when autofocus started playing up. The point of focus couldn't be found and the motor moves the focus ring from the infinity setting to the minimum focal range and then back every time I try to focus, regardless of how far away the subject is. Since it started doing it, it has been consistent and I've not been able to use autofocus at all.
The time between the last shot when it worked and the problem starting was only a minute or two and the camera was in my hands and turned on all the time so it didn't suffer from any knocks. It is possible that I touch something which changed a setting but I can't think of any settings which would cause autofocus to play up in this way.
This afternoon I was using my D610 with an AF-S Nikkor 28-300 zoom attached. It's the lens I use for general purpose and has actually been on the camera for a few months. All was going well as usual until about half way through my walk when autofocus started playing up. The point of focus couldn't be found and the motor moves the focus ring from the infinity setting to the minimum focal range and then back every time I try to focus, regardless of how far away the subject is. Since it started doing it, it has been consistent and I've not been able to use autofocus at all.
The time between the last shot when it worked and the problem starting was only a minute or two and the camera was in my hands and turned on all the time so it didn't suffer from any knocks. It is possible that I touch something which changed a setting but I can't think of any settings which would cause autofocus to play up in this way.