Your camera lens may eventually need cleaning or to be stored if you're not using it for prolonged periods, but if you do so ...

You’ll then clearly see any dark dust spots on your sensor against the bright white paper. You can manually start in-camera sensor cleaning on your Canon via Sensor Cleaning>Clean Now in the menu.

Let’s kick off with a disclaimer – Nikon recommends that if your camera’s image sensor has any specks of dust that can’t be ...