Singh-Ray Corporation, known as Singh-Ray Filters is an American maker of photographic filters based in Arcadia, Florida, and established in 1962.
They are among the more expensive brands and have a reputation for high quality and personalized service. Singh-Ray manufactures some unique filters such as the Vari-ND a 2 to 8 stop neutral density filter and the Vari-N-Duo, a combination of the Vari-ND and a circular polarizer.