wide angle objective 广角镜头

wide-angle objective 广角物镜 ; 广角镜头

symmetrical wide-angle objective 对称广角物镜

right-angle objective lens 直角物镜

pin hole wide-angle objective 针孔广角物镜

objective angle 不等于他觉斜角

wide-angle mapping objective 广角摄影物镜

objective angle of image field 像场角

From an objective angle 从一个客观的角度