When the screen is installed in the camera, the only safe option is blowing the dust off with a bulb blower. Canned air is not recommended, as freezing liquid can spray into the camera. Stubborn dust can be loosened with a very soft brush, such as a sensor brush or a soft artist’s brush.

With the screen out of the camera, there are a few more options. Again, the bulb blower is the preferred option because it is the safest. Sometimes dust will adhere to the screen by a static charge; here’s a little trick to help with that - just give the screen a breath of warm air, as if you were trying to fog up a window, and immediately blow the screen off with the bulb blower. You may need to repeat the process several times. It sounds a little strange, but the slight moisture in your breath will actually help to dissipate the static without contaminating the screen. Of course, the sensor brush will also work with the screen out of the camera. In addition, the canned air is reasonably safe to use outside the camera, although you should still exercise care to avoid letting the freezing liquid hit the screen.