Traditional Culture Encyclopedia - Photography major - Working principle of reflective telephoto lens

Working principle of reflective telephoto lens

The working principle of the reflective telephoto objective is that the reflective telephoto objective or the anti-telephoto objective is composed of a front negative lens and a rear positive lens group. According to relevant public information, it is characterized by its long back intercept compared with its effective focal length EFL, and is widely used as a short focal length wide-angle objective lens of Dan Toujing reflex camera.