Schneider - 4x4" True-Pol Circular Polarizer Professional Glass Filter

Take your photography and cinematography to the next level with the 4x4" True-Pol Circular Polarizer Professional Glass Filter. This high-quality, professional-grade filter is renowned as the most effective polarizer for motion picture and television cameras, boasting an extinction ratio of ER 374. This makes the Schneider True-Pol 12 times more effective than other polarizing filters, unmatched in its ability to reduce glare, eliminate unwanted reflections, saturate colors, deepen blue skies, and improve contrast. Crafted with precision, this durable filter is diamond cut from crystal-clear, water-white optical glass. It's meticulously ground and polished to achieve precise flatness and plane-parallelism, ensuring an exact parallel relationship between the front and back filter surfaces. The perfection of this process is verified by a laser interferometer, guaranteeing the highest level of optical performance. The Schneider True-Pol filter is checked with a densitometer for consistent density and tested with a spectrophotometer for optimal light transmission. This meticulous attention to detail results in ultra-high consistency, enabling cinematographers to swap like filters mid-shoot with no discernible variation in color or effect. Designed to withstand the most rigorous demands, this versatile filter features Schneider's specially formulated hard anti-reflective (AR) coating. This proprietary coating resists flaking, peeling, and scratching while reducing light loss and flare to less than 1% per surface. This is a significant improvement compared to untreated glass, which has a light loss of 4% per surface. Schneider's unique Edge Seal protects unmounted laminated filters against delamination and edge-chipping, reducing edge reflection and edge flare. The precision mounting rings on Schneider screw-on filters are virtually jam-proof, crafted from robust brass for long-lasting use. Unlike other filters that degrade image quality when used with long lenses, Schneider filters maintain unsurpassed clarity, light transmission, and color saturation. Even when stacked, they offer no visible compromise of image quality, making them the clear choice for use with any lens. In conclusion, the 4x4" True-Pol Circular Polarizer Professional Glass Filter is an essential tool for any professional photographer or cinematographer, designed to enhance image quality and withstand the rigors of on-set or location shooting.