circular iris meaning in English

圆形光阑
圆形光圈

A wide - angle , zoom lens with high resolution and brightness . features a circular iris with excellent defocusing characteristics , and advanced distance integration ( adi ) for enhanced flash shooting performance
具高解像度及高亮度的广角变焦镜头；特色是配备出色的散焦功能的圆形光圈，以及可提升闪光摄影的效能表现的先进综合距离( adi )闪灯测光。
A versatile zoom lens with bright imaging at any focal length . features a circular iris with excellent defocusing characteristics , and advanced distance integration ( adi ) for enhanced flash shooting performance
多功能变焦镜头，无论在任何焦距之下，皆可创造出亮丽的影像；特色是配备出色的散焦功能的圆形光圈，以及可提升闪光摄影的效能表现的先进综合距离( adi )闪灯测光。