Take your macro photography to the next level with the NiSi Close Up Lens Kit Nc 77mm, complete with 67mm and 72mm adapters. This high-quality lens kit transforms your telephoto lens into a macro lens, providing a generous working distance and compatibility with both zoom and prime lenses within the focal length range of 70-300mm (full-frame equivalent). The close-up lens kit is a versatile and innovative solution for achieving a closer minimal focal distance, enhancing the detail and clarity of your macro shots. The magnification achieved with this lens kit is dependent on the focal range of your lenses, with longer focal lengths providing higher magnification. When focusing at 200mm, you can expect near 1:1 magnification, offering professional-grade detail in your macro photography.Understanding the maximal and minimal focus distances is crucial when using this close-up lens kit, as it allows you to capture perfectly focused images within the specified range. The optimal working distance for this lens is between 22-30cm. For the sharpest details, it's recommended to use the close-up lens on telephoto lenses with an aperture of f/8-f/16.Constructed with double optical corrective glasses, the NiSi Close-up lens boasts an apochromatic design and multi-nano coating. This ensures advanced resolution and natural color reproduction, virtually eliminating purple/green fringing both within focus and in bokeh. This durable and professional lens kit is an essential tool for any photographer looking to enhance their macro photography skills..