&0Zn21q F-tanθ畸变最大显示89度,刚查了手册 ]GYO`, 原文如下: v*5n$UFV Note that this reference is meaningless for optical TH2D ;uv systems that use field angles at or greater than 90 degrees. If a system with field angles over 89 degrees is "U34D1I)# analyzed with this feature, the maximum computed field angle will be limited to 89 degrees