Description Built from high-grade Delrin plastic, our 150mm clamp-on ring range allow you to attach larger lenses to 150mm-sized fittings; such as matte boxes or lens filters. Working as a standard clamp-on ring, the innovative Z-cut design guarantees a steady grip on the lens. With internal donut sizes ranging from 104mm to 134mm, you can find the perfect size to fit your lens – with no light leaks. Durable and dependable, the 150mm clamp-on rings – and our entire range of clamp rings – are great additions to your filmmaking arsenal. Delrin Design Rather than using plastic injection moulding, we choose to construct our rings from high-grade Delrin. This ensures dimensional accuracy and maximum clamping force, while retaining a light weight on the front of your camera. Tightly Clamped To protect the image from light leaks, all of our clamp-on rings feature our Z-cut design. This allows the ring to clamp tightly onto the lens with uniform pressure: ensuring a steady hold on your matte box. Light-Sealed The rings tightly lock the matte box in place, ensuring no light leaks escape around the edges of the lens. Part of the Clamp-On Ring System Our clamp-on rings are ideal for resizing the end of your lens for matte boxes and other accessories. For adjusting a variety of lenses to a variety of sizes, there are a number of alternate ring clamp sizes available: 114mm Clamp-On Rings 162mm Clamp-On Rings
