Bun-G-Ring will launch the new Circular Glass Adapter (CGA-138) at BSC Expo 2026, it has been announced.
The patent-pending “CGA-138” (Circular Glass Adapter) is a new accessory within the Bun-G-Ring (BGR) system, an “innovative means of mounting filters to lenses without matte boxes or tape”.
The CGA-138 is designed to easily mount standard 138 mm diopters, rota polas and other round optical elements quickly and securely without taping and when a traditional matte box is either too large or too heavy.
It mounts directly onto your existing BGR via the bungee cord mount system and incorporates a robust “Spring & Lock Mechanism” that creates a safe, rock-solid mounting solution.
Rectangular filters can still be positioned either in front of the CGA-138 or between the CGA-138 and the BGR, depending on your magnification needs. If a single +3 diopter is not enough, multiple CGA-138s can be stacked if needed.
The CGA-138 is made of the highest quality materials designed for long life and to protect your glass and weighs 40.1g (1.41 oz). The CGA functions only with the Bun-G-Ring. It is not a standalone product.
They will be available to view at BSC Expo 2026, with special discounts on the purchase of the BGR and the CGA-138.
It has also been announced that Bun-G-Ring Singles are now available.
Up until now, the Bun-G-Ring system has only been available as a Standard Kit of three, which covers front diameters from 80 mm to 114 mm.
For the first time, Bun-G-Rings can be purchased individually in the following sizes:
BGR – 95 (Single) This Single contains one colour-coded BGR-95 with accessories and a neoprene sleeve. It’s compatible with 400+ cinema lenses and supports front diameters: ⌀ 80 mm ⌀ 87 mm ⌀ 95 mm.
BGR – 110 (Single) This Single contains one colour-coded BGR-110 with accessories and a neoprene sleeve. It’s compatible with 200+ cinema lenses and supports front diameters: ⌀ 104 mm ⌀ 110 mm.
BGR – 114 (Single) This Single contains one colour-coded BGR-114 with accessories and a neoprene sleeve. It’s compatible with 400+ cinema lenses with the following front diameter: ⌀ 114 mm.
All Singles are now available through the Bun-G-Ring website.
Finally, Coral Anamorphic full sets are also now available.
The lenses provide filmmakers with a new state-of-the-art large-format 1.5x anamorphic lens set with a 2x look, extreme close focus and metadata.
The first feature shot on the lenses was Ballad of a Small Player. The set consists of five focal lengths: 35 mm, 50 mm, 75 mm, 90 mm and 120 mm.
More information is available on the Second Reef website.
