论文部分内容阅读
你已经有了一款标准变焦镜头和一款望远变焦镜头,正想合理扩展自己的镜头群?这样的话,超广角镜头是一个有益的补充。
You already have a standard zoom lens and a telephoto zoom lens, is trying to rationalize their own lens group? In this case, ultra-wide-angle lens is a useful addition.