Originally posted by Penview52 By Original Poster :
" Thanks, all! Got the rocket blower and a cleaning kit. Rocket blower solved all."
Did the blower remove the dust in the sensor/mirror? Is the photo now clear?
This is the first time I have seen a dust formation which is so arranged in circle in a prefect manner - I doubted the dust formation is not a dust but thermal effect on lens. I might be wrong but response by original poster will erase my misconception that it is not a dust. It reminds me of the song " Dust in the wind " lets have some fun.
The pictures are now completely clear. I could feel some things blowing out onto my hands when I used the blower - like little particles. At any rate, it worked.