12/02/2026
Closer focus: without a bulky matte box.
With the Circular Glass Adapter, working with diopters no longer relies on tape or improvised solutions when a traditional matte box is too large or in the way. By design, the CGA lets you work extremely close to the subject.
Multiple CGAs can be stacked when additional diopter magnification is needed. Rectangular filters can be positioned in front of or between the CGA and the Bun-G-Ring, depending on your magnification needs, while an integrated silicone Grip Seal protects the glass.
Now available to order via our webshop for a limited BSC Expo introductory price.
Expected to ship in week 12.
Visit us at Expo 2026, booth #219.