My wife and I took these K&F CONCEPT ND PL Filters on our recent hiking trip, and I have to say, they truly elevated our outdoor footage. We used the ND8, ND16, ND3, and ND64 filters, and each one performed wonderfully in different lighting conditions. The filters helped us control exposure, reduce glare, and capture crisp, professional-looking videos and photos—even under harsh sunlight and bright mountain skies. It’s like turning our ordinary hikes into cinematic adventures.What I appreciated most was the build quality. The HD optical glass is crystal clear, with multi-coating that effectively reduces reflections and enhances image clarity. The metal frames feel robust and durable—lightweight enough for easy handling, yet sturdy enough to withstand outdoor conditions. The quick-snap design made it effortless to swap filters on our Insta360 GO Ultra without missing a beat during our fast-paced hike.During our trek, these filters were put to the test in various scenarios—bright sunlight, shaded forest areas, and reflective water surfaces. Each time, the ND and PL filters delivered excellent results, balancing light and reducing excessive glare. The polarizing effect was especially noticeable when shooting reflections on lakes and wet rocks, giving our footage that polished, professional look. My wife kept saying, “Whoa, it’s like having perfect lighting every time!”The multi-coated optical glass ensures that our footage remains sharp without unnatural color shifts or dark spots. Whether we were capturing sweeping mountain views or close-up nature details, the footage stayed clear and vibrant. Plus, the filters are easy to clean—just wipe with a soft cloth, and they look brand new again. The additional benefits of durability and ease of use mean we’ll be bringing this kit along on all our future outdoor adventures.Overall, I am very satisfied with this filter kit. It’s a quality investment that truly enhances our outdoor videos and photos. For anyone looking to improve their outdoor filming experience with professional-grade filters—whether you’re a hobbyist or a semi-pro—these K&F CONCEPT filters are a must-have. They turned our simple hike into a cinematic masterpiece, and I can’t wait to see what we record next!