| 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 $n |)M+d X and Y F-numbers for each field angle N#(p_7M X 1.992151 2.046117 2.172037 2.364546 Z(F`M;1>xI Y 1.992151 2.338546 3.121385 4.866429 XcfvmlBoD- 0 .999 .999 .999 nksx|i l 10 .986 .986 .984 ~\;s}Fv. 20 .971 .971 .963 L\1&$|? 30 .957 .957 .939 cB,O"- 40 .942 .943 .913 hfUN~89; 50 .928 .929 .883 y7a84)j3 60 .914 .914 .853 Npq_1L 70 .899 .900 .821 KxZup\\:v 80 .885 .886 .789 ma__LWKM, "Dr8}g:X 第二列为理想的MTF值,最后一列为实际值,
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