Real physical computing magnification, Triples the power of any inserted eyepiece, triples the power of any 1.25" eyepiece without adding a very long extension between the telescope and the eyepiece. The SVBONY 1.25" 3x barlow lens provides superior performance and sharpness and contrast.The SV112 camera adapter kit for prime focus;in this imaging method the camera is connected directly to the telescope and placed at the "prime" focus of the telescope;the telescope becomes the camera lens. no eyepiece is used in this method;this method provides the widest possible field of view, the shortest possible exposure time and moderate magnification;typically used for imaging nebulae; galaxies and other large (but dim) deep sky objects.