... ENT, ophthalmology microsurgery. Secondary mirror and primary mirror at a 90 degree position, with the light path, are the ... ~ 25X continuous zoom powerField diameter: 85.0mm ~ 8.5mmWorking distance: 200,250,300,350,400 mm40mm focal range of fine ... arm 1200mmBearing arm rotation angle 360135 camera interface, a digital camera interface, 1 / 3 inch CCD camera interface, and dedicated digital cameras, ...