UV Protective Filter for Pentax 90mm f/2.8 D FA 645 Macro ED AW SR Lens — Reduces Blue Cast & Shields Front Element

Made specifically for the Pentax 90mm f/2.8 D FA 645 Macro ED AW SR Lens. Improves outdoor results by blocking ultraviolet light that can produce hazy, low-contrast photos—an effect that is especially noticeable at high elevations, by the ocean, or on snow-covered terrain. By reducing the bluish cast often introduced by daylight, it helps render more natural tones and clearer images in a variety of lighting conditions. Optical characteristics: - Clear, optically neutral construction with a 1x filter factor (+0 stop), so exposure, contrast and color balance remain unchanged. - Preserves image sharpness, fine detail and true color accuracy while providing UV attenuation. Protection and everyday use: - Designed to stay mounted on the lens for routine shooting, acting as a sacrificial barrier against scratches, dust, dirt, water spots and fingerprints. - Adds a measure of physical protection from accidental contact, bumps or drops, helping to extend the usable life of the front lens element.