The B+W 77mm Circular Polarizer MRC Filter is a high-quality lens filter designed by the reputable brand B&W. Made in Germany, this filter features a circular shape and polarizing effect, ideal for enhancing image quality and reducing glare. With a threaded mount fitting and a size of 77mm, this filter is compatible with a wide range of cameras and lenses, making it a versatile and essential accessory for photographers looking to improve their work.