The Eyelead Air Blower L has a dust filter at the lower end which prevents dust from leaving the air blower while using it. Keep in mind that other air blowers do not have this filter and dust that might have entered the air blower will simply be blown back onto the surface you are trying to clean. With the Eyelead Air Blower L , you will be able to effectively clean the lens, sensor, mirror, screen, etc, of your camera.