Essential Protection and Speed for Large-Format Filtration

The ARRI LMB F1 Filter Frame 6.6 x 6.6 in (SKU: K2.0033481) is a premium, studio-grade filter tray designed to safely house and swap large-format cinema glass. Engineered as an essential component of the ARRI F1 filter family, this 6.6 x 6.6" frame is crucial for high-end digital cinematography where large camera sensors and ultra-wide lenses are used. By enclosing fragile glass filters in a rigid, protective metal frame, camera assistants can handle, clean, and slide filters into the matte box with speed and security, eliminating the risk of leaving fingerprints on the glass or dropping naked filters during hectic lens changes.

Secure, Dual-Axis Locking Architecture

To ensure the safety of valuable optical glass, the K2.0033481 incorporates an integrated, spring-loaded quick-release lock. This tactile mechanism clamps down firmly on the top edge of the filter, securing it inside the frame's channels. Whether you are rigging the camera vertically for a top-down shot, running on a high-speed tracking vehicle, or swinging on a dynamic crane arm, the filter stays perfectly locked in place. The frame's specialized outer guide pins match perfectly with the locking rails of the LMB 6x6 and LMB-6 matte boxes, ensuring a satisfying, secure click when sliding the tray home.

Optimized for Wide Glass & Zero Vignetting

When shooting on large-format sensors with wide-angle optics, traditional 4x5.65 filters can easily cause vignetting at the frame edges. The 6.6 x 6.6" standard provides the expansive glass surface area required to prevent edge cutoffs, and the low-profile metal frame of the K2.0033481 maximizes this clear optical path. Additionally, its tight, lightproof fit ensures that when you slide multiple F1 frames next to each other, no stray backlighting or overhead sun can seep between the trays to create ghosting or contrast loss in your image.