OM SYSTEM BMF-LPC01 Body Mount Artificial Light Pollution Suppression FilterThis Body Mount Light Pollution Filter BMF LPC01 eliminates light from artificial sources such as city lights and street lamps. This prevents color casts in the night sky, allowing you to capture the original beauty of nebulae and constellations more vividly. In addition, since the area near the horizon is most susceptible to light pollution, the BMF LPC01 is also effective when photographing constellations rising in the eastern sky or setting in the