Astro Clip-in Filter For Sigma FP/BF L-Mount – Magnetic

Our Kolari Astro Clip-in Filters for Sigma FP/BF L-Mount (Astro) provide several filter options to help enhance your Astrophotography images. Engineered with Kolari’s professional-level optics, these filters are available in three options: UV/IR Cut H Alpha Pass, Light Pollution Filter, and IDAS NBZ-II. Crafted with the premium optical glass we’re known for, our Kolari Magnetic Clip-in Filters for Sigma FP/BF L-Mount are finished with advanced anti-reflective and anti-smudge hard coatings to boost light transmission and reduce flares and ghosting. These multi-coated filters are also hydrophobic, dust-resistant, and scratch-resistant, making them easy to clean and built to withstand the demands of any shooting environment. Each filter is housed in a precision CNC-machined aluminum magnetic frame designed for Sigma FP/BF L-mount cameras. This rear-mounted solution works seamlessly with lenses that lack front filter threads and can also be paired with external lens filters, allowing for flexible, multi-layered filtration setups.