How do clean sensor?

To clean a camera sensor, first ensure the camera is powered off and the battery is removed. Use a blower to gently remove dust and debris, then use a specialized sensor cleaning solution and a lint-free swab or pad to carefully wipe the sensor in a single, smooth motion. Avoid applying too much pressure and never touch the sensor with your fingers. After cleaning, check for any remaining spots by taking a test image of a clear sky or a blank wall at a small aperture.