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Nikon Integrated Dust Reduction System that includes Image Sensor Cleaning function
After repeated testing, Nikon developed comprehensive dust reduction measures, that meet the stringent demands of serious photographers. The system vibrates the optical filter with four different resonant frequencies to shake off the dust. It can be switched on automatically when the camera is turned on and off or manually controlled from the menu. Additionally, Nikon takes further, multidimensional measures; it operates certain body parts prior to assembly to prevent dust dispersion after mounting, and enables the user to reduce or delete any spots with optional software.