Elevate Your Macro and Close-Up Cine Work

The ARRI Pro Set Diopter Accessory 138mm / 4.5 inch (SKU: KK.0021007) is a comprehensive, cinema-grade optical adapter kit engineered to bring advanced macro close-focus capabilities to standard cinema lenses. Specifically tailored for the modular ARRI LMB 4x5 Lightweight Matte Box system, this professional set provides rental houses and owner-operators with a highly secure, reliable method to mount thick, heavy glass diopters close to the lens. By utilizing the included components, camera assistants can effortlessly introduce close-up diopters (such as standard +0.5, +1, or +2 strengths) into their optical path, reducing the minimum focus distance of cine prime or zoom lenses without having to swap out the matte box assembly.

Modular, Adaptable Multi-Filter Sizing

The true versatility of the KK.0021007 set lies in its multi-diameter design architecture. The main Diopter Stage K2.0014745 is built to house large 138 mm round diopters natively. To ensure maximum utility across diverse filter packages on set, the kit includes the Diopter Adapter K2.0014380. This precision-machined spacer ring steps down the inner diameter of the housing, allowing operators to securely slot in smaller 4.5-inch round diopter filters without any play or light leakage. Three matching Diopter Frames (K2.0014000) round out the kit, giving ACs the flexibility to keep several strengths pre-mounted for fast, seamless changes between setups.

Rugged Mechanical Performance on Set

Every structural component within this set is crafted from high-grade anodized aluminum, delivering the ultimate combination of physical strength and lightweight agility. The Diopter Stage mounts quickly to the rear of the LMB 4x5 matte box chassis, locking into place via a dual-screw safety latching system that prevents accidental releases during fast camera moves. Each frame slides into the guided track with tactile precision, held in place by a heavy-duty locking pin. To guard your premium glass when the diopters are not rigged on the camera, the set comes complete with three rugged, padded cordura protection pouches.