Constructed from optical glass for clarity

• Compatible with filter holders that can accommodate 2mm-thick, 100 x 100mm rectangular filters such as the Haida 100 Filter Holder or Haida 100-Pro Filter Holder
• Reduces the appearance of light pollution in video or images that include the night sky and illumination from artificial light sources
• For cameras with daylight film installed, or a digital camera system with its daylight white balance setting selected
• Absorbs the yellow light from sodium-vapor lamps, a common light source within urban areas
• Enhances the visibility of astronomical objects, and where they appear, artificial light sources are more clearly defined with less glare and improved contrast
• 1.25x filter factor reduces exposure by 0.3 stops
• Padded filter case for storage and transport