A magnifying attachment being post-fixed to a camera by which a high magnification image can be obtained without including an imageless part. The enlarging attachment has a magnifying objective lens 21A, a field lens 21B for making parallel light beams passed through the objective lens 21A, and a focus lens 21C for focusing the parallel light beams on a camera lens 42. Light beams passed through the focus lens 21C are focused on the pupil 42X of the camera lens 42 at a solid angle exceeding the view angle of the camera lens 42.