minimum visual angle

例句：

1. 1. The camera'sminimum visual angle is 60 degrees.
   相机的最小视觉角度是60度。
2. 2. To achieve the best results, weneed to adjust the lens to its minimumvisual angle.
   为了获得最佳结果，我们需要调整镜头至其最小视觉角度。
3. 3. Theengineer measured the angle of the light beamwith a minimum visual angle of 45 degrees.
   工程师用最小视觉角度为45度的光束测量了光线的角度。