(D) Camera settings: In order to achieve a viewing effect close to the human field of view, the photo sampling camera is uniformly set to a wide-angle shooting with a focal length of f=35mm.
(d) Camera setting: in order to approach the viewing effect of human visual field, the photo sampling camera is uniformly set as the shooting wide angle with F = 35mm focal length.
(d) Camera setting: In order to approach the viewing effect of people's field of vision, the photo sampling camera is uniformly set to the shooting wide angle with a focal length of f=35mm.