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Dust removal systems compared Anonymous
http://pixinfo.com/en/articles/ccd-dust-removal/

Old article but pretty much:

Olympus: 50% effectiveness
Canon: 5% effectiveness
Pentax and Sony: 0% effectiveness
Long Time Favourite Air Blower: 90% effectiveness
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>> Anonymous
> Pentax and Sony: 0% effectiveness

That pretty much sums them up for everything else too. lol
>> Anonymous
>>105588

>DURR DURRR HURRRR