I have for a time had problem with a spot/speck on the sensor of my Pentax K-5. I few weeks ago I acquired a lensklear pen (
Lenspen SensorKlear II with Articulated Tip SK-1A B&H Photo) to try to clean it away myself when that didn't work I handed it in to the local photo store for cleaning.
Unfortunately when I got the camera back it still had the spot (although it had moved a bit). After two more tries the employee in the shop gave up and said he could not help me.
According to him he had tried both wet and dry cleaning in the appropriate order.
Now if it wasn't for that the spot actually moved during the cleaning I would have thought that it was a scratch. What can it be that is so persistent but still can move around on the sensor?
Do I have other options of how to properly clean the sensor?
Attaching two photos both taken at f22. One taken before cleaning and one after.