Kenko Zeta Quint Circular PL for contrast enhancement and reflection part number 219423 Filter, 49mm, reduction,

This circular polarizing filter reduces unwanted light reflections, vividly reproducing the subject's original colors. It also produces a "color contrast effect" by reducing reflections on water or glass surfaces and deepening the color of blue skies. [Approximately 1EV Brighter Light Transmission] The high-transmittance polarizing film achieves approximately 1EV brighter light transmission than a standard C-PL filter. The PL effect is achieved while keeping the viewfinder bright and clear. It also minimizes the impact of reduced shutter speed, allowing use in low-light conditions. Exposure multiplier: 1.7-2.2x (approximately 2/3 to 1 stop). [Safe and secure tempered glass] Optical glass is heat-treated and chemically strengthened to achieve approximately three times the strength of regular glass, protecting your precious lenses. In the unlikely event of breakage, the fragments will break into small particles, preventing serious injury or accidents. [First-ever filter frame with duralumin] This filter frame is the first to feature duralumin, which is harder than aluminum. It resists distortion even when subjected to impact, protects the glass from pressure caused by external factors, and maintains the flatness of the glass. [Dust-free coating] This coating makes it difficult for water droplets and fingerprints to adhere, and even if it does get dirty, it can be easily wiped off. This coating makes cleaning during and after shooting easy. Ultra-low reflection ZR coating: By reducing the reflectivity of the glass surface to less than 0.6% per side in the visible light range, the effect of attaching a filter on image quality is reduced to nearly zero. This makes it compatible with a wide range of lenses, from the latest high-performance, high-resolution lenses to vintage lenses whose image quality you want to enjoy. Country of manufacture: Japan Manufacturer model number: 219423 Filter diameter: 49mm