Hoya Red Intensifier Filter 72mm Starscape Glass Lens

The Hoya Red Intensifier Filter uses didymium glass — a rare-earth glass formulation — to selectively boost red, orange, and brown tones in your photographs. Unlike a simple warming filter that shifts the entire color spectrum, this filter targets specific wavelengths associated with warm colors, increasing their saturation and contrast while leaving cooler tones relatively untouched. The result is more vibrant autumn foliage, richer brick and sandstone textures, and more dramatic warm-light landscapes without heavy post-processing.

Marketed also under the "Starscape" name, this 72mm filter pulls double duty for astrophotographers. The didymium glass absorbs the orange-yellow wavelengths emitted by sodium vapor streetlights, helping to reduce light pollution in nighttime exposures. For daytime use, it excels with rocky landscapes, fall colors, and any scene where warm tones are the focal point. Photographers should note that shooting in RAW is recommended, as the filter's color shift is easier to fine-tune with full white balance control in post-production.