Right now I am traveling and ot seems the mode button is not working. I can not have a choice to us anything but P mode. Autofocus is also a bit unstable. Nothing has happened to the camera vi or lens (100-500 mm). I have tried to reset settings. And also to take out battery etc.
Sorry to hear about your problem. A reset should include both camera and custom C1~C3 settings reset. Now remove the lens. Power on and test changing modes. If the behavior has not changed, the camera will require service.
Bay Area - CA
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