u#SWj,X F-tanθ畸变最大显示89度,刚查了手册 ?bu>r=oIO] 原文如下: [0e_* Note that this reference is meaningless for optical {l>hMxij systems that use field angles at or greater than 90 degrees. If a system with field angles over 89 degrees is Z%\,w(o[h analyzed with this feature, the maximum computed field angle will be limited to 89 degrees