Couldn't help myself and bought a Visible Dust sensor loupe the other day(somehow I have this other spot smack in the middle of my D700 sensor that has appeared and I can't blow it off! Too afraid to try anything else just yet but I wanted to see what it was). I used it for the first time yesterday and found it amazing and yet somewhat depressing at the same time.
It was amazing how clearly you could see whats on the sensor. It was incredible how well it lit up the inside of the chamber allowing you to see everything that's going on in there.
Hence the reason it was also depressing, because looking through the loupe inside the chamber there appeared to be all sorts of foreign matter stuck to the walls - fibres, dust, etc, and lots of it.
Question: is there anything that can be done about this, say, a miniature vacuum cleaner? Has anyone tried this? Anyone seen the same thing when they clean their sensors. It appears to me that if you can't get rid of the dust off the chamber walls then you always run the risk of something falling onto your sensor soon after cleaning it.