UV Protector Filter for NiSi 250mm f/5.6 Reflex Lens (Nikon F) — 1x (+0 stop) Optically Neutral UV Shield; Reduces Bluish Daylight Cast, Protects from Dust & Scratches

Made for the NiSi 250mm f/5.6 Reflex Lens (Nikon F). This UV filter blocks ultraviolet radiation that often causes hazy, low-contrast results—an issue that becomes noticeable at high elevations, near the sea, or in snowy environments. By cutting UV, it lessens the bluish tint of daylight so images show more natural tones and improved clarity in a wide range of lighting situations. Optical characteristics: the filter has a clear, optically neutral design with a 1x filter factor (+0 stop), so it does not change exposure, contrast, or color balance. You keep full sharpness, fine detail, and accurate colors while benefiting from UV reduction. Everyday protection: intended to remain mounted on your lens, the filter acts as a front-line barrier against scratches, dust, dirt, water spots, and fingerprints, and helps prevent accidental contact with the front element. It also provides added defense against bumps, drops, and abrasions, helping to prolong the service life of your lens.