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Message: <blockquote data-quote="Marcel" data-source="post: 102740" data-attributes="member: 3903">What makes you so sure that they are oil spots? Dust looks just like an oil spot on a sensor. I've got a D7000 and had dust, cleaned the sensor, dust gone. Sensor cleaning will not damage the sensor if done properly. Remember that you are not actually touching the sensor. You will be touching the filter in front of the sensor. This surface is not that easily scratched believe me. So in my opinion, your best investment would be to find someone in your area that could teach you sensor cleaning (doing your camera in front of you), buy the supplies and then you'll be able to do it on your own whenever. Don't let it scare you, it's not rocket science.Welcome to the forum.</blockquote>