Lindsey Optics offers a new range of Brilliant² Rota-Grads. This line of full-spectrum graduated neutral density spin-on filters fits directly into 4' x 5.65' stem-mounted clip-on matte housings.

Rota-Grads are available in a variety of densities. The 138mm graduated round FSND filter installs on a gear-driven turntable mount that fits into a single matte box slot. A gear wheel allows you to rotate the filter to the desired position and you can then lock this position with the sliding Rota-Lock.

Having a rotating 138mm circular graduated ND filter allows the user to accentuate specific areas of a scene by darkening a foreground or corner of the shot. Additionally, it also makes it easier to align the filter's gently sloping line with a sloping horizon, such as a mountainside.

Rota-Grads Brilliant² offers a significantly larger aperture than other traditional filter alternatives. This allows you to use them with large diameter and wide angle lenses.