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Tilta

Tilta MB-T12-125 125mm Clamp-on Matte Box Backing

Purpose-built 125mm backing ring that securely clamps the Tilta MB-T12 matte box to large-diameter cinema lenses.

$99.00*
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*Price sourced from Amazon.com. Last updated:Jul 14, 2026.Price and availability are subject to change.

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Overview

The Tilta MB-T12-125 is a 125mm clamp-on backing designed to bridge the gap between your large-diameter cinema lenses and the Tilta MB-T12 Clamp-on Matte Box. If your lens has a 125mm front diameter, this backing allows you to mount the matte box directly without step-up rings or improvised solutions. The machined aluminum construction ensures a snug, rattle-free fit that holds steady during handheld shooting and gimbal work alike.

As part of Tilta's modular matte box ecosystem, this backing is one of several diameter-specific rings available for the MB-T12 system. It keeps your rig streamlined by eliminating adapter stacking, and its tool-free clamp design allows for fast lens swaps on set. For cinematographers and videographers working with large-format lenses, it is an essential component for controlling flare and shaping light with the MB-T12's filter stages.

Key Features

125mm Matte box backing to use with lenses with that front diameter

Made for Tilta MB-T12 Clamp-on Matte Box

Specifications

Brand
Tilta
Model
MB-T12-125
Diameter
125mm
Compatibility
Tilta MB-T12 Clamp-on Matte Box
Type
Clamp-on Matte Box Backing

Pros & Cons

👍 Pros

  • Precisely machined for a secure, wobble-free connection between the MB-T12 matte box and 125mm lenses.
  • Lightweight construction adds minimal bulk to your lens setup.
  • Purpose-built design eliminates the need for step-up rings or third-party adapters.
  • Quick to attach and remove during lens changes on set.

👎 Cons

  • Only compatible with the Tilta MB-T12 matte box, limiting use if you switch systems.
  • Exclusively fits 125mm front diameter lenses, so you need separate backings for other lens sizes.
  • A single-purpose accessory that adds to the total cost of completing your matte box kit.

Frequently Asked Questions

It fits lenses with a 125mm front diameter, allowing you to attach the Tilta MB-T12 Clamp-on Matte Box directly to those lenses.
No, it is designed specifically for the Tilta MB-T12 Clamp-on Matte Box and is not intended for use with other matte box systems.
No additional adapters are needed as long as your lens has a 125mm front diameter. The backing clamps directly onto the lens and connects to the MB-T12 matte box.
Tilta manufactures it from machined aluminum, consistent with their cinema accessory line, providing a durable and precise fit.

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