Bun-G-Ring – A New Method for Mounting Filters Without Tape

A new filter-mounting tool called the Bun-G-Ring has been introduced as an alternative to taping filters onto camera lenses. Using a bungee cord-based system, it is designed to attach filters securely without adhesives. The product was developed by camera assistant Stevie Vos and gaffer Erno Das, who sought a reusable solution after experiencing difficulties with taping filters on set.

When a matte box is impractical due to space constraints or lens compatibility, taping filters onto the lens is a widely used alternative. However, tape can detach over time, especially in hot or humid conditions, and removing it can leave adhesive residue. If the tape fails, filters can fall and break, which can be costly.

Taping filters: a common practice with limitations

The Bun-G-Ring is intended to address these issues by using elastic tension instead of adhesive. It consists of a reinforced polyamide ring with Dyneema-threaded bungee cords designed to hold filters in place. The manufacturer states that the system can be installed in under six seconds and supports stacking up to five filters at once.

Design and materials

According to the product’s specifications, the Bun-G-Ring weighs 61.7g (2.17 oz) and is made from glass fiber-reinforced polyamide and stainless steel. Dyneema®, a material commonly used in aerospace and sports applications, is used in the elastic cords for added strength.

The system is advertised as being compatible with all standard filter sizes, though the practical fit may vary depending on lens and filter combinations. The manufacturer has not specified whether the Bun-G-Ring can be used with all filter thicknesses or if certain setups may require adjustments.

Development and availability

According to the people behind the product, it was developed over a period of several years, with over 120 prototypes tested before reaching the final version. The design process involved practical testing on film sets to refine its functionality.

The Bun-G-Ring is being distributed exclusively by Second Reef, with two purchasing options:

• Standard kit (€495) – Includes three different-sized Bun-G-Rings and accessories.
• Triple kit (€495) – Includes three identical Bun-G-Rings with matching accessories.

More details, including compatibility information and user guides, are available on their official website.

Industry adoption remains to be seen

The Bun-G-Ring introduces a different approach to securing filters, but its performance in professional environments will depend on real-world use, and I am guessing the “taping filters” method is often applied due to improvisational needs on set – and I question whether one will have a Bun-G-Ring available when that spontaneous need arises. Whether it provides a reliable alternative to tape will likely be determined by feedback from cinematographers and camera assistants over time.

What do you think about the Bun-G-Ring? Are you taping filters to lenses regularly?