Cokin clear sky 95mm

Light pollution filters block certain wavelengths of street lighting, such as the emission spectra of sodium and mercury vapour lamps. In city photography, the yellow-orange hue of street lamps is greatly reduced. In astrophotography, the contrast of the sky is increased by obscuring the gradient of the sky background, causing the stars or the Milky Way to stand out. Double-sided AR and AF multi-layer optics treatment (anti-glare, water-repellent, oil-resistant and scratch-resistant) International products have separate terms, are sold from abroad and may differ from local products, including fit, age ratings, and language of product, labeling or instructions.