| supagi |
2007-01-13 12:03 |
本人觉得,由于畸变的存在,使得不同视场具有不同的焦距,其必然引起不同的F数 [su2kOX|X X and Y F-numbers for each field angle 9?B}CCE<LR X 1.992151 2.046117 2.172037 2.364546 J =o,: 3" Y 1.992151 2.338546 3.121385 4.866429 "e62g 0 .999 .999 .999 ZY-UQ4_|u 10 .986 .986 .984 ,lSt}Lml 20 .971 .971 .963 QCkPua9 30 .957 .957 .939 -;=0dfC( 40 .942 .943 .913 9d{iq"*R 50 .928 .929 .883 QXx<Hi^ / 60 .914 .914 .853 HN,E+dQ 70 .899 .900 .821 xZAc~~9tD 80 .885 .886 .789 6wH]W+A HRO:U% 第二列为理想的MTF值,最后一列为实际值,
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