Complex sentence: The E- 520 uses Olympus' patented Supersonic Wave Filter dust reduction system to shake dust from the sensor during startup and when requested by the user; this largely eliminates the problem of dust accumulation on the surface of the image sensor.
Split into simpler sentences: The E- 520 uses Olympus' patented Supersonic Wave Filter dust reduction system to shake dust from the sensor during startup and when requested by the user. This system largely eliminates the problem of dust accumulation on the surface of the image sensor.