Before cleaning the camera, remove the battery or the DC Coupler, and disconnect the power plug from the electrical outlet. Then wipe the camera with a dry, soft cloth.
If dirt gets inside the mount when changing lenses, depending on the recording conditions, it may adhere to the image sensor and appear on the recorded picture. To prevent debris or dust adhering to internal parts of the body, avoid changing the lens in a dusty environment and always fit the body cap or a lens when storing the camera. Remove any dirt on the body cap before attaching it.
The camera has a dust reduction function that will blow off the dirt and dust that have affixed to the front of the image sensor. This function will function automatically when the camera is turned on, but if the dirt is particularly noticeable, from [Setup] [Others], perform [Sensor Cleaning].
The image sensor is very precise and delicate, so be sure to observe the following when you do have to clean it yourself.