The K&F Concept Square Movie Blackout Kit brings the 4×5.65″ cine filter format to a mirrorless rig at a fraction of the cost of a full matte box. Two slots take standard square filters and the frame blocks the side light that causes flare.
The kit ships with 67, 72, 77, 82 and 95mm adapter rings, so it clamps onto almost any lens you already own rather than committing you to one thread size.
Two slots means you can run an ND with a diffusion or graduated filter behind it, and swap either one without touching the other.













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