The UMB-1 Universal Mattebox (Swing-away) comes standard with two rotating 4x5.65 filter stages (optional third stage available), collapsible French flag, 143mm native diameter opening, NATO standard accessory rails left, right, and top for attaching accessories, ARRI-style rubber bellows with 114mm standard opening, a complete set of clampable reduction rings, and a height-adjustable swing-away clamp. The UMB-1 is designed to be upgraded by the user and can quickly switch from the swing-away variant to the clampable and ultralight variants when using a stabilizer.

Reduction rings quickly snap into the bellows to allow for fast and easy lens changes. Another great feature of these reduction rings is that they are compatible with all 114mm threaded bellows from third-party manufacturers as they feature specially designed tabs.

• The matte-box kit can be attached to 15mm lightweight rods & enables unlocking, forward rolling, & 90° opening of the mattebox.
• Native 143mm opening & NATO standard accessory rails left, right, and top.
• Compatible with studio rods using UMB-1 studio adapters.

Specifications:

• Weight: 1.85lb (2.3lb with top flag)
• Dimensions: 9 x 6 x 3.5""

Coverage Test Results:

Epic Dragon with Wooden Camera PL Mount

• Arri / Zeiss Ultra Prime 16mm T1.9 - No vignette in 5K
• Cooke S4/i 16mm T2.0 - No vignette in 4K
• Angenieux Optimo DP 16-42mm T2.8 - No vignette in 5K at 18mm width
• Leica Summicron-C 18mm T2.0 - No vignette in 5K
• Cooke S4/i 21mm T2.0 - No vignette in 5K

Epic Dragon with Red Ti Canon Mount (EF)

• Zeiss CP.2 15mm T2.9 - No vignette in 6K
• Canon L Series I 16-35mm f2.8 - No vignette in 6K

Sony A7S (FF) with EF Adapter

• Sigma 12mm Prime - No vignette in full frame
• Canon 24mm L-Series Prime - No vignette in full frame

Included Components:

• Swing-away clamp
• 2x rotating 4x5.65 filter stages
• Collapsible French flag
• 143mm rubber bellows with 138mm round filter slot
• Swing-away insert set
• NATO standard accessory rails left, right, and top
• Universal fabric donut

Included Reduction Rings:

• 80mm
• 87mm
• 95mm
• 104mm
• 110mm