Read the complete sensor cleaning pdf link in my previous post.
<http://www.prime-junta.net/pont/How_to/a_Brush_Your_Sensor/a_Brush_Your_Sensor.pdf>
You'll see that the author considers powered on sensors attracting dust
to be believable on the order of old wives tales. He has an interesting
argument. He also believes that cleaning brushes being statically
charged is also a bunch of hooey. Has a good argument there too which I
think is backed up by his cleaning methods and results which do not
attempt to generate a static charge.
Chuck Norcutt
Bernard Frangoulis wrote:
>>I just cleaned my 5D for the first time and now I don't believe the 5D
>>has a dust problem.
>
>
> I have just asked about this question on the Luminous Landscape forum:
> http://luminous-landscape.com/forum/index.php?showtopic=12656
> The consensus appeared to be that some 5D bodies, at least among the first
> produced ones, had a dirty mirror chamber due to remaining filings, dirty
> factory conditions or something similar. If you cleaned them, the problem did
> not reappear, at least not any more than any other DSLR (except 4/3!).
>
> Another point is that it is probably better to switch the camera off before
> changing lenses (so the sensor is not charged), although one user said this
> does not matter on Canon cameras.
>
> Bernard
>
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