Description

Introducing the Vocas MB-260 Flexible Donut Ring 114mmAdapter Ring

The Vocas MB-260 Flexible Donut Ring 114mm is a flexible adapter ring designed to fit between a lens and a matte box mounted on 15mm rails. It seals the gap between the lens and the matte box to prevent light leaks, dust, and unwanted reflections.

The114mm flexible adapter ring is designed for matte boxes using a 114mm collar.
It comes with several donuts (88mm, 70mm, and 50mm) to accommodate different lens outer diameters.
This ring is used on 15mm rails, meaning it must be used in a configuration where the matte box is mounted on these rails for optimal stability and alignment.
The compatible lens diameter range is from 70 to 100mm (outer diameter).
The ring’s material combines a rigid body with silicone or soft rubber elements, providing both flexibility and a secure fit.

Practical use cases

When filming outdoors with a matte box, the sun’s rays can penetrate between the matte box and the lens. Theflexible ring solves this problem by creating a watertight seal between the two.

If you change your lens (for example, going from an 85mm to a 100mm), you can simply replace the internal soft donut instead of changing the entire adapter ring.

With the Vocas MB-260 Compact Matte Box, this flexible ring is integrated as one of the modular components, allowing for a compact and scalable configuration without light leaks.

Frequently Asked Questions:

1. What are the compatible lens diameter ranges?

   Theflexible ring accepts lenses with an external diameter between 70 and 100 mm thanks to the donuts provided.

2. Can the MB-260 Flexible Donut Ring 114 mm be mounted on a matte box without rails?

   No, it is designed to be used with the matte box mounted on 15mm rails, in order to guarantee alignment and stability.

3. How many donuts are included with the ring?

   Three flexible donuts are included: 88mm, 70mm and 50mm to fit various lens sizes.

4. Is the assembly simple?

   Yes, the ring fits into the 114mm collar of the matte box, and the correct donut is chosen to seal the space between the lens and the matte box without risk of slippage.

5. What benefits does this flexible adapter ring offer?

   • It prevents unwanted light leaks

   • It protects against dust and unwanted reflections.

   • It allows for great flexibility in lens compatibility without a complete ring change.

Key features of the Vocas MB-260 Flexible Donut ring 114mmAdapter Ring

• Versatile mounting : supports multiple lens diameters via interchangeable donuts

• Optical sealing : eliminates light leaks and unwanted reflections

• Saves time : avoids changing the ring for each lens

• Native compatibility : mounts on the 114mm collar designed for the matte box

• Modular integration : designed for MB-260 type matte boxes and 15 mm rail systems