The NiSi Close Up Lens Kit Nc 58mm (with 49 and 52mm adapters) is the most effective way to achieve a closer minimal focal distance. The magnification achieved depends on the focal range of lenses. It will be higher with longer focal lengths. The diopters of NiSi 58mm Close-up lens is +5 and is made of double optical corrective glass with apochromatic design and muti-nano coating. This enables advanced resolution, natural color with almost no purple/green fringing both within focus and In bokeh.The magnification will be 1:1 at a focal length of 120mm. The NiSi Close Up Lens Kit Nc 58mm (with 49 and 52mm adapters) has no vignetting at 35mm on a full-frame sensor camera and 24mm on a Aps-c sensor camera.The 58mm Close Up Lens is available for: Lenses with 58mm filter thread. Focal length 24-250mm prime/zoom/macro lenses for Aps-c frame Lenses with 58mm filter thread.