Pentax smc FA 45mm f/2.8 UV Protection Filter — Optically Neutral 1x (+0) UV Blocker, Cuts Bluish Daylight Cast, Shields Against Dust & Scratches

Made for the Pentax smc FA 45mm f/2.8 lens, this UV protection filter absorbs ultraviolet radiation that can introduce haze and reduce contrast—an effect most noticeable at high altitudes, by the ocean, or in snowy environments. By removing excess UV, it lessens the bluish cast of daylight so colors look more natural and overall image clarity is improved in a variety of outdoor lighting conditions. The filter is optically neutral and clear with a 1x filter factor (+0 stop), so it does not change exposure, contrast, or color balance; sharpness and fine detail are maintained while benefiting from UV reduction. Intended for everyday use, it serves as a protective barrier for the front element—guarding against scratches, dust, dirt, water spots, fingerprints, and accidental contact, and providing extra protection from bumps or drops to help prolong the life of your lens. It can remain mounted on the lens at all times without altering image quality.