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

• Clampable mattebox kit that can be attached natively to 143mm lens fronts & includes clamp adapters.
• Can be converted to a single-stage ultralight stabilizer configuration without a sunshade.

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:

• 2x rotating 4x5.65 filter stages
• Collapsible French flag
• Clamp adapter set
• NATO standard accessory rails left, right, and top

Included Clamp Adapters:

• 80mm
• 87mm
• 95mm
• 104mm
• 110mm
• 114mm
• 125mm
• 134mm
• 136mm