ARRI 4x5.650" Rota Pol

Rotating circular polarizer frame for ARRI matte boxes that occupies the space of a single F4 filter stage. Water White optical glass circular polarizer with less than 1.2 stops light reduction. Polarizer rotates via friction-driven gears at top and bottom with integrated lock to prevent unintended adjustment. Compatible with LMB-5, LMB-15, LMB-25, LMB 4x5 and MB-19 matte box filter stages.