{"product_id":"square-nd4-4in-x-5-65in-matte-box-nd-filter-2-stops","title":"Square ND4 4in x 5.65in Matte Box ND Filter - 2 Stops","description":"\u003cp\u003eOur review of the Square ND4 4in x 5.65in Matte Box ND Filter finds it most useful for filmmakers and videographers who need simple, reliable exposure control when using a matte box. Mounted in a Tilta or SmallRig matte box, this ND4 (0.6) filter reduces light by two stops to help maintain desired shutter speed and aperture without changing color balance. Built from imported optical glass with dual polishing and extensive coatings, it aims to protect image quality while reducing reflections and vignetting, making it a practical choice for 4K and 8K capture setups.\u003c\/p\u003e\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eMatte box compatibility:\u003c\/strong\u003e Designed to fit standard matte boxes and filter frames so it can be used with Tilta, SmallRig or mini matte boxes for versatile rigs.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e2-stop light reduction:\u003c\/strong\u003e The ND4 0.6 density reduces exposure by two stops, helping to control shutter speed and aperture in bright conditions without changing ISO.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eImported HD optical glass:\u003c\/strong\u003e Double-sided polished glass keeps images sharp and avoids introducing a color cast, which is important for high-resolution 4K and 8K shooting.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUltra-low reflectivity:\u003c\/strong\u003e Reflectivity is controlled at 0.2% to minimize lens reflections and reduce the chance of unwanted flare and vignetting.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e28 multi-layer coatings:\u003c\/strong\u003e Nanometer coatings on both sides make the filter scratch resistant, waterproof, oil proof and fingerprint resistant for easier field maintenance.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eWho It's For\u003c\/h2\u003e\n\u003cp\u003eThis filter is aimed at independent filmmakers, cinematographers, and camera operators who already use a matte box and need a compact, neutral solution for modest light reduction. It is particularly useful for run-and-gun 4K and 8K workflows where maintaining image clarity and color neutrality matters.\u003c\/p\u003e\n\u003cp\u003eThose who should look elsewhere include still photographers who prefer circular screw-in filters for single-lens use and anyone needing heavy light reduction beyond two stops; this single-density square filter is not a full variable ND solution.\u003c\/p\u003e\n\u003ch2\u003ePros \u0026amp; Cons\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003ePros\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eClean two-stop exposure control that helps balance aperture and shutter speed without color shift.\u003c\/li\u003e\n\u003cli\u003eHigh clarity from imported optical glass keeps fine detail intact for high-resolution video.\u003c\/li\u003e\n\u003cli\u003eDurable 28-layer coatings add scratch, oil and water resistance for field reliability.\u003c\/li\u003e\n\u003cli\u003eLow reflectivity reduces lens flare and vignetting for better contrast and color fidelity.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eCons\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eAs a square ND4, it must be mounted in a matte box and cannot be screwed directly onto a lens, limiting convenience for some shooters.\u003c\/li\u003e\n\u003cli\u003eOnly a single density (2 stops) is provided, so users needing broader exposure control will need additional filters.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eSpecifications\u003c\/h2\u003e\n\u003ctable\u003e\n\u003ctr\u003e\n\u003ctd\u003eFilter type\u003c\/td\u003e\n\u003ctd\u003eSquare ND4 (0.6) neutral density\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions\u003c\/td\u003e\n\u003ctd\u003e4 in x 5.65 in (10.16 x 14.35 cm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLight reduction\u003c\/td\u003e\n\u003ctd\u003e2 stops (0.6 density)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eGlass\u003c\/td\u003e\n\u003ctd\u003eImported HD optical glass, double-sided polished\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCoatings\u003c\/td\u003e\n\u003ctd\u003e28 multi-layer nanometer coatings (both sides)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eReflectivity\u003c\/td\u003e\n\u003ctd\u003eApprox. 0.2% ultra-low reflectivity\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMounting\u003c\/td\u003e\n\u003ctd\u003eMatte box \/ filter frame compatible (Tilta, SmallRig, mini matte box)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\u003ch2\u003eOur Verdict\u003c\/h2\u003e\n\u003cp\u003eThe Square ND4 4in x 5.65in Matte Box ND Filter is a straightforward, well-made option for videographers who use a matte box and need a reliable two-stop reduction without compromising image clarity. Its optical glass and heavy coatings deliver low reflection and durable protection, making it a good value for 4K and 8K shooters who want consistent neutral density control as part of a matte box kit.\u003c\/p\u003e\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eCan this filter be screwed onto a lens?\u003c\/strong\u003e\u003cbr\u003eNo. This is a square matte box filter and must be used in a matte box or compatible filter frame rather than screwing directly onto a lens.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWill it change color or reduce sharpness?\u003c\/strong\u003e\u003cbr\u003eDesigned with imported optical glass and double-sided polishing, it is intended to maintain sharpness and avoid noticeable color cast for high-resolution video.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eIs it weather resistant?\u003c\/strong\u003e\u003cbr\u003eThe 28 multi-layer coatings make the surface more resistant to scratches, water and oil, helping protect the filter during outdoor use.\u003c\/p\u003e","brand":"K\u0026F Concept","offers":[{"title":"Default Title","offer_id":48233949921499,"sku":"B0CQJXS95P","price":49.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0724\/1043\/1707\/files\/71LWuGXesmL._AC_SL1500.jpg?v=1770809953","url":"https:\/\/gearmusthave.com\/products\/square-nd4-4in-x-5-65in-matte-box-nd-filter-2-stops","provider":"GearMustHave","version":"1.0","type":"link"}