长焦距镜头又称作望远镜头,它的焦距范围没有严格的界限,一般指焦距超过100mm,如果焦距超过600mm也叫作超望远镜头。人们在摄影实践中,注意到了长焦距镜头“望远”的效果,长焦距镜头在近距离(几十米到物距最近点)拍摄中,也有一些独特的优势,有较大的应用空间。本文仅就长焦距镜 Long focal length lens, also known as the telescope head, its focal length range is not strictly limited, generally refers to the focal length of more than 100mm, if the focal length of more than 600mm is also called the telescope head. In photography practice, people noticed the telephoto effect of the long focal length lens. There are also some unique advantages and great application space for the long focal length lens shooting at close range (tens of meters to the nearest object distance). This article only on the long focal length mirror