Filtrocam Ravello Graduated ND Filter Kit

Ravello Grad solves the one problem a solid ND cannot: at sunrise and sunset the sky is several stops brighter than the ground, and a single exposure either blows the sky out or buries the foreground. A graduated ND darkens only the top of the frame, pulling the two halves into one exposure the sensor can actually hold.

These are magnetic, so the filter seats in a second and still rotates freely afterward, which is how the horizon line gets aligned to the actual horizon rather than to whatever angle the threads stopped at. The glass carries multiple anti-reflection coating layers to prevent internal ghosting and hold color fidelity, and the coating is shock resistant, anti-dust, oil-proof, and water-proof.