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A new Swiss Air Blower wouldn’t remove that spot on the CCD of my Canon D70.

Neither would a Lenspen.

I went to James’ office and tried out his wicked CCD cleaning kit, consisting of special purpose cotton slab and a methanol-based solution. That didn’t work either. In fact, more dust got onto the CCD.

The Lenspen took care of the new dusts.

Now I am convinced the original spot is not dust on top of the CCD filter. I have no idea what it is. It could be dust between the filter and the CCD (how the hell did it get there in the first place?!), or some corrosive dust that left a mark on the CCD filter.

Crap. I’d need to find out how to take that CCD dust reference photo.