Uploaded April 2023 | Updated September 2026, 2 weeks ago

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In this exhaustive ARRI Tech Talk, Sean will take you through all features of the industry-standard and ubiquitous lightweight matte box, the LMB 4x5. This video is split into chapters for easy navigation and is designed to be used as a reference.

For more information, please visit the LMB 4x5 webpage: arri.com/lmb4x5
The online Matte Box Checker tool can be found here: arri.com/matteboxchecker

00:00 Intro
01:02 History of the LMB
04:45 Philosophy of the LMB
06:13 LMB 4x5 Sets
06:55 LMB 4x5 Case
07:27 Clamp-On Set 3-Stage & Clamp Adapters
09:46 Clamp-On Set 3-Stage Features
16:39 LMB 4x5 15mm LWS Set 3-Stage
19:07 LMB 4x5 Pro Set
20:38 Side Flags
21:24 Accessory Adapter + ARC-1
23:11 Rotating Filter Stage
24:30 Using the Swing Away Tilt Module
28:15 143mm Clamp Adapter + Bellows
31:32 Spherical & Anamorphic Mattes
32:17 Diopter Frame & Stage
36:25 Rota Pola Frame
37:48 Anti-Reflection Frame
38:41 Flexible Sunshade
40:52 ARRI FSND Filters
41:46 Weight
42:52 Lens Compatibility