- Lens Compatibility : This filter holder system is designed to fit any 72mm lens from various brands. For lenses measuring 58mm, 62mm, 67mm, 77mm, or 82mm, please check out our adapter rings available in store. - Filter Compatibility : Supports 100mm x 100mm and 100mm x 150mm square filters, with a thickness of 2.0mm. The system can accommodate up to 3 square filters simultaneously, including types such as ND, gradient ND, gradient blue, gradient orange, gradient red, and gradient green. - Extensibility : Each adapter ring allows you to use a step-up circular filter. For example, the 72mm-77mm adapter lets you attach a 77mm circular filter (CPL, ND, UV), enhancing your filter options. - Lightweight and Durable : Made from lightweight aluminum alloy and crafted with CNC technology, the entire filter holder system, including the adapter ring, weighs just 0.18lb (85g). The kit includes a portable carrying case, and the filter holder's surface is treated with oxidation for increased hardness, protection against scratches, and a matte, anti-fingerprint finish. - Practical Applications : Ideal for landscape photography to control exposure and enhance colors; perfect for long-exposure techniques to create dynamic water and cloud effects; and useful for videography to maintain consistent color temperatures across changing conditions. This filter holder system combines functionality, compatibility, and durability for all your photography needs.