Advanced Tilting Mechanics for Reflections Control

The ARRI 6-inch Tilting Filter Ring (SKU: K2.0001174) is a highly specialized, studio-grade lens adapter designed exclusively to match the innovative tilting architecture of the ARRI SMB-1 (Studio Matte Box 1). Unlike traditional static matte boxes, the SMB-1 features a tilt adjustment designed to eliminate internal filter reflections and flares caused by overhead light sources. This 150 mm R1 ring features a unique two-part split assembly that allows the bellows to pivot smoothly up and down, keeping the matte box securely aligned with the optical axis of the lens without putting physical strain on the lens barrel.

Expansive Lens & Thread Compatibility

This 6-inch filter ring is standardized with a direct 150 mm clamp diameter, locking securely onto large-format cinema zoom and prime lenses. For camera packages utilizing smaller optics, the K2.0001174 maintains incredible workflow flexibility. It is designed with native mounting threads that support the entire catalog of ARRI R8 screw-on step-down rings. Additionally, by adding the ARRI K2.66095.0 step-down adapter, operators can quickly mount smaller R4-standard screw-on rings, allowing a single SMB-1 matte box kit to easily scale across diverse lens packages.

Robust, Light-Tight Studio Build

Crafted from premium-grade anodized aluminum, the Tilting Filter Ring is built to survive the harsh realities of daily set life. Its physical components are carefully toleranced to guarantee quick, tool-free installation during lens changes, while keeping the physical payload to an absolute minimum. To ensure total image integrity under direct sun or strong studio backlights, the ring is treated with a non-reflective matte finish and utilizes tight, lightproof composite bellows connections to ensure that not a single stray beam of light bypasses the filtration path.