View Full Version : CCD Protective Filter - Hard glass or plastic?

08-20-2005, 06:27 PM
I've been reading a lot about how to clean dust off of CCD's just incase the need ever arises to do it on the fly - some people say that the filter over the CCD is plastic and very weak, and other websites have said its hard glass (like maybe a microscope slide).

Knowing about the material of the filter can tell us about the danger of cracking or scratching the glass while attempting to clean it. Does anyone know what it's made of?

08-21-2005, 10:24 AM
Extract from http://www.luminous-landscape.com/essays/sensor-cleaning.shtml

Contrary to the urban myths that propagate like viruses on computer discussion boards, no digital camera with interchangeable lenses has a exposed imaging sensor. All either have a glass anti-aliasing filter or an optical glass cover. With the right tools cleaning this piece of glass is no more dangerous than cleaning your lens' front element. But, the sensor is awkwardly located, and if you use the wrong tools you can scratch the surface of this filter or glass plate, which can lead to a costly repair. If you're fumble fingered you can also scratch the mirror or ground glass.