Thank you very much for viewing this product. I used it once after purchasing it, but haven't taken it out since, so I'm offering it to someone who will use it with care. It's a variable ND filter. Please check the promotional video: https://youtu.be/SZKSsNFwifs?feature=shared Retail price: 64,900 yen Tilta Mirage VND Kit Modular Matte Box with Variable ND Filter + Accessories Mirage is a new matte box system developed for modern video creators. It's a lightweight structure, a multifunctional modular design, and an affordable solution for efficient video production today. It adopts a new 95mm clamp-on backing that can be directly attached to classic cinema lenses such as ARRI Ultra Prime and Leica Summicron-C, and also supports lenses for more familiar digital SLR cameras and mirrorless cameras. The newly designed circular filter weighs 1/4 of the conventional 4x5.65 filter, achieving weight reduction, size reduction, and cost efficiency. The matte box body has an aerodynamic design and is equipped with ventilation holes to reduce wind resistance and ensure stability when shooting subjects at high speeds. The cartridge filter design inherited from the film industry replaces the conventional screw-on filter system and can be quickly installed with a single press. It supports various special effect circular filters such as star patterns, multi-color streaks, anamorphic flares, and black/white promist, supporting creative visions in modern video production. Accessories will continue to be released in the future, further expanding the possibilities of the system. 【Color / Model Number】 Black / MB-T16-A