If you do not actively pollute the matrix, then simply hand it over for paid cleaning. Even once a year on average (depending on the activity of use and pollution, you can afford to hand over an expensive camera for cleaning to specially trained people). Its pros: A good pencil, but it is better to buy a set with a flashlight lens in the kit first Got cons: If you don't know what to do, don't try to save money. Leave it to the professionals for cleaning. It will be more expensive, but not as expensive as a damaged matrix.
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