Elevate your photography with the NiSi S6 150mm System Main Adapter Ring. Specifically designed to facilitate the use of the NiSi S6 150mm System on the Sigma 14mm f/1.4 DG DN Art GM lens, this adapter empowers you to explore the world landscape and long-exposure photography.The adapter setup is a breeze. Simply slide it over your lens, secure it by twisting the silver collar, and tighten the locking pin. The adapter accommodates a singular NiSi S6 Circular Filter (sold separately), allowing you to choose from a range of options, including Circular Polarizers and Neutral Density filters. The external dials on the adapter ring enable independent rotation of a polarizer, giving you complete control.The NiSi S6 150mm Filter Holder Frame (sold separately) can be effortlessly attached to the adapter ring. This system enables swift installation and removal without the need to detach the lens from your camera. The Square Filter frame accommodates two 150x150mm or 150x170mm filters, 2mm thick, providing ample creative possibilities.Durability is at the forefront of this adapter ring's design, featuring an aluminum alloy construction that ensures long-lasting use. The main adapter employs the same matting treatment as high-end lens hoods to eliminate ghosting and flare, ensuring your images remain pristine. Due to the design of the Sigma 14mm f/1.4 DG DN Art lens, there may be some vignetting when using square filters and the frame is rotated at a 45-degree angle.If you already own the NiSi S6 Holder Kit, adding this adapter makes it compatible with your Sigma 14mm f/1.4 DG DN Art lens, offering a seamless transition for your setup. With over 13 other lens-specific S6 models available, this Main Adapter simplifies using S6 Circular and 150mm square filters across all your ultra-wide lenses.Elevate your landscape imagery with the NiSi S6 150mm System Main Adapter Ring.