UV Protective Filter for Pentax HD PENTAX-D FA645 35mm f/3.5 AL [IF] Lens — UV Absorption, Blue-Cast Reduction & Front-Element Protection

Made to fit the Pentax HD PENTAX-D FA645 35mm f/3.5 AL [IF] lens, this UV filter reduces ultraviolet light that can cause hazy, low-contrast results—an effect that’s especially common at high altitude, along coastlines, or in snowy environments. By cutting UV, it helps minimize the bluish cast of daylight so images render truer tones and improved clarity in a wide range of lighting conditions. Optically neutral and clear in design, the filter has a 1x filter factor (+0 stop), so it does not change exposure, contrast, or color balance. Your photos keep their original sharpness, fine detail, and accurate color while benefitting from UV attenuation. Beyond image correction, the filter serves as a durable protective layer you can leave on the lens continuously. It shields the front element from scratches, dust, dirt, water spots, fingerprints, and incidental contact, and provides added defense against bumps, drops, and abrasions—helping to preserve the long-term condition of your lens.