I've taken about 700 pictures with my new Sony Alpha 77 II, all at the maximum 6000x4000 resolution. However, when I reviewed the pictures afterwards there are a couple at the lower 4240x2832 resolution among them, always a few consecutively. I guess the resolution somehow switched to the lower resolution, and it was restored after I switched the camera off and on again.
I have no idea how this could have happened. Is there a way to unintentionally and temporarily change the resolution without going through the menu? Or could this be a software bug (in which case it should have happened to others as well)?