Of, relating to, or being a wide-angle photographic lens that covers an angle of about180=, producing a circular image with exaggerated foreshortening in the center and increasing distortion toward the periphery.

• （使用）鱼眼镜头的覆盖角度在180°左右、产生圆形图象且中央是夸张的使更向外围扭曲的透视图的广角摄影镜头的或与之有关的