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Message: <blockquote data-quote="hark" data-source="post: 183601" data-attributes="member: 13196">Re: Does sensor loose its image quality after cleaning dust spots again and again????What you REALLY need to do to end the problem is to have the shutter replaced. The shutter causes the oil to splatter on the low pass filter which covers the sensor. The sensor itself is not touched during the cleaning process--it is the low pass filter that gets spotted. Let me repeat--the sensor has a low pass filter on top of it so the sensor itself is not in contact with the oil spots. Cleaning it properly will remove the oil. Care needs to be taken so no one uses too much of the cleaning fluid. There have been reports of streaks on the low pass filter which may be due to using too much of the fluid. You can have it cleaned time and time again, but the actual solution to the problem is to have the shutter replaced under warranty.</blockquote>