0|!<|N< F-tanθ畸变最大显示89度,刚查了手册 UMwMXmZNJ 原文如下: *UoHzaIqz Note that this reference is meaningless for optical 1!wEXH( systems that use field angles at or greater than 90 degrees. If a system with field angles over 89 degrees is ('-}"3 analyzed with this feature, the maximum computed field angle will be limited to 89 degrees