Schneider 6.6x6.6" RHOdium Full Spectrum Neutral Density FSND 2.7 Filter, 9 Stop

The Schneider RHOdium Full Spectrum Neutral Density (FSND) filters are a superior line of ND filters, meticulously designed to meet the stringent color standards of advanced 4K, 6K, and 8K resolution cameras. With the evolution of 4K, 6K, and 8K digital sensors, issues with IR leakage have significantly reduced, yet these high-resolution imaging sensors can still experience IR leakage within the far-red component of the visible spectrum and the near IR. As such, IR absorption remains a critical requirement, especially at optical densities of 1.2 and above.

Schneider's RHOdium FSND filters provide a solution to this challenge, offering a truly neutral ND filter that effectively controls the IR within the full visible spectrum and extends into the near infra-red. These filters are manufactured to unprecedented flatness/parallelism specifications, ensuring they can resolve even the finest detail.

Schneider's innovative design incorporates an ultra-thin neutral density interlayer, sandwiched between two layers of crystal-clear Schott water-white glass. This unique construction results in superior transmitted wavefront flatness/parallelism. Furthermore, the coating is encapsulated between the glass layers, protecting it from abrasions and making it more durable, even in the demanding conditions of the rental market.

RHOdium FSND filters are the first of their kind to undergo a lab-tested tristimulus scan, a more rigorous color measurement method than previously used. This process verifies neutrality by using a colorimetric algorithm that compares samples to perfectly neutral light, resulting in unparalleled accuracy.

Whether you're a cinematographer or photographer working with the latest digital image capture technology or traditional film, the FSND filters are an excellent choice for all your Neutral Density needs, providing complete control over the visible spectrum. In the realm of physics, the Greek letter rho symbolizes the unit of Optical Density, and Rhodium is part of the "Platinum Group of Metals" on the periodic table, reflecting the high-quality and performance of these filters.