| 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 UT [7 J X and Y F-numbers for each field angle QL}5vSl X 1.992151 2.046117 2.172037 2.364546 E!Hq%L!/ Y 1.992151 2.338546 3.121385 4.866429 _`/0/69 0 .999 .999 .999 a*CP1@O 10 .986 .986 .984 9:A>a3KOH 20 .971 .971 .963 tu77Sb 30 .957 .957 .939 # j*$ `W; 40 .942 .943 .913 [V{JuG;s 50 .928 .929 .883 w(r$n|Ks9 60 .914 .914 .853 K7<'4i~k 70 .899 .900 .821 ^j'; 4' 80 .885 .886 .789 \l{*1lQ` ( y^oGY; 第二列为理想的MTF值,最后一列为实际值,
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