Enhance Your Photography with Our Variable ND2-400 Lens Filter Variable ND Filter: Discover the versatility of our adjustable neutral density filter, designed with a combination frame that allows you to rotate the lens and achieve a variable ND value effect. By simply turning the frame, you can observe the lens transition smoothly from light to dark, providing you with the flexibility to control exposure precisely in various lighting conditions. Wide Compatibility: This innovative filter utilizes the principle of stacking two CPL filters to deliver its adjustable capabilities. The recommended usage range is ND2-ND400, offering a broad spectrum of light control perfect for most shooting scenarios. Please note that higher density ranges such as ND1000 and ND2000 are not achievable with this filter, ensuring optimal performance within its designed range. ND2-ND400 Filter: Easily attach the filter to your camera lens and point it towards bright areas like the sky. Gradually rotate from the minimum to maximum setting and watch the color changes in the viewfinder. If you notice uneven light reduction, use the corresponding scale position as a guide for adjusting long exposure settings. Longer exposures are typically required to eliminate X shadows, especially in high-density ranges, ensuring vibrant, balanced images. Usage Instructions: Uneven light reduction is not a quality defect but a result of Moore fringe. To eliminate the X shadow, ensure sufficient long exposure time. Remember, the maximum position is your limit; as you approach ND1000, usability diminishes. For best results, the recommended effective range for this adjustable ND filter is ND2-400. Long Lasting: Crafted from shock-resistant tempered optical glass and encased in a durable aluminum alloy frame, this variable ND lens filter is both lightweight and robust. Its construction ensures longevity and reliability, making it an almost unbreakable accessory for your photography gear, ready to withstand the rigors of professional use. Elevate your photography with this versatile and durable ND2-400 lens filter, perfect for capturing stunning images with precision and ease. Whether you're a professional photographer or an enthusiast, this filter will help you achieve breathtaking results with every shot.