How to clean your DSLR camera.
Dirt is not a friend to your digital SLR camera. It can get into cracks and crevices of the camera body. It can attach itself to the glass of the lens. It can even make its way inside your camera and stick to the glass above the image senor. Dirt can also show up in your images as little black spots. That’s why running the camera’s built-in image-sensor cleaning process, and giving the rest of the working parts an occasional cleaning, is important.