Laowa Aurogon FF 10-50X NA0.5 Supermicro APOLaowa Aurogon FF 10 50X NA0. 5 Supermicro APO covers full frame sensors and can directly use on cameras. It features seamlessly interchangeable magnification tubes, offering 10X, 20X, 35X, and 50X magnification options. The adjustable numerical aperture (NA) of this microscope lens ranges from 0. 5 to 0. 1, the high NA providing room for exceptional brightness and minimal diffraction. The lens is designed with a fixed 20mm long working distance,