The Chrosziel 130-110mm Intermediate Ring is a precision machined accessory designed for professional camera and lens support systems, specifically within matte box configurations. Its primary function is to serve as an adapter or spacer between components that have differing front diameters, most commonly between a follow focus unit or lens with a 130mm outer diameter and a matte box system designed for a 110mm rod or clamp interface. This ring effectively bridges the gap, ensuring a secure, concentric, and rigid connection that maintains proper alignment and eliminates any play or wobble between the camera lens and the attached matte box, which is critical for maintaining consistent matte box positioning and avoiding vignetting.

Constructed from high-grade aluminum or similar durable metal, the ring is engineered for lightweight yet robust performance in demanding film and video production environments. Its design typically includes precise mounting threads or a locking mechanism on one side to attach securely to the lens or follow focus, and a compatible interface on the opposite side to accept the matte box's mounting clamp. By providing this intermediate step, the ring expands the compatibility of matte box systems, allowing cinematographers to use a single matte box with a wider variety of lenses and support gear, thereby increasing system flexibility and reducing the need for multiple, lens-specific matte box solutions.

In practical use, this accessory is a key component for building a modular and adaptable camera rig. It ensures that all front-of-camera accessories remain perfectly aligned on the optical axis, which is essential for using graduated filters, polarizers, and other effects housed within the matte box without introducing image degradation. For camera assistants and cinematographers, the Chrosziel Intermediate Ring is a simple yet vital piece of hardware that enables precise, reliable, and professional integration of lens support and shading equipment.