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D~ F-tanθ畸变最大显示89度,刚查了手册 +IG=|X 原文如下: DC2[g9S>8@ Note that this reference is meaningless for optical Hh*
KcIRX systems that use field angles at or greater than 90 degrees. If a system with field angles over 89 degrees is I !O5+Er analyzed with this feature, the maximum computed field angle will be limited to 89 degrees