9u 'hCi( F-tanθ畸变最大显示89度,刚查了手册 MRB>(} 原文如下: '9,14e6 Note that this reference is meaningless for optical ,H3C\.%w\ systems that use field angles at or greater than 90 degrees. If a system with field angles over 89 degrees is -9S.G analyzed with this feature, the maximum computed field angle will be limited to 89 degrees