Does anyone else have an issue with excessive spotting on photos with their mirrorless camera? I have a Sony Alpha a7 iii used mainly with a single E-mount G-series lens with a Hoya DMC UV filter... But in recent months I've noticed that I am editing out dozens of spots from marks - on the lens or perhaps from the camera. I've tried cleaning the filter, the lens, blowing out dust from the other end of the lens/inside camera but a lot of these marks/spots remain. I rarely change lenses. I previously used Canon DSLR cameras & lenses and never had the problem to the extent I am having now. Any ideas? Is this a 'feature' of mirrorless cameras??