Starscape - Light Pollution Size:72 0 maximum aperture and outstanding

0 maximum aperture and outstanding overall optical performance

Its functional design allows you to use it with almost all phone and case combinations

dustproof and water-resistant construction

A marvel of optical precision

a UD lens element and enhanced lens coatings for high-contrast

Starscape - Light Pollution Size:72 0 maximum aperture and outstandingThis filter has many names; Starscape, Intensifier, Red Intensifier, Ra54, Light Pollution filter, "didymium" filter (technical term) and so on. In today's digital photography world it is most commonly used by astrophotographers to reduce the orange yellow glow caused by city lights. The filter targets specific wavelengths of light emitted by common Sodium and Mercury vapor street lamps and blocks a portion of that orange yellow glow as it passes