Universal ultra-low distortion external lens for smartphones with mono or multi-camera systems. The original 4BLANC macro lens is compatible with any smartphone camera and can be attached to a phone with a simple clamp (included). For optimal image quality, make sure that the position of the lens is aligned center to center with the camera of a smartphone and thus firmly attached. Incorrect positioning can lead to distortion, loss of clarity, vignetting, and other unwanted image objects. Always clean the lens with a soft cloth before use. Keep it dry and protect it from water, sand, dust and other small particles. Don't drop it. Handle it with care and keep it in the protective bag during transport.