Lens dust/dirt on Panasonic FZ-150
I've had the Panasonic FZ150 for a couple of years; I've taken 1000's of pictures and always been satisfied with its performance. Recently, however, when focusing on a shot, I will see lens dust in the view finder and it will be seen on the imagine after taking it. If I turn the camera off, or change the mode, the dirty lenses condition will disappear, the focus is clear and no dust.
Is this something I can correct/fix or am I going to have to send it to a "service center"
I've attached samples of the problems.
Any ideas on why this is happening?
Any help would be appreciated.