So these 4 dust spots/specks suddenly appeared on my sensor - or so I thought. After cleaning the sensor, and shooting blue sky at f/22, they are NOT on sensor. Yet I see them through my camera's view finder, if I stare at a white wall through it.
I guess I have to live with the sight, as I don't want to send my camera to anywhere.
BUT.... if they are not on sensor, where are they? behind the sensor ?