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 h%v qt~0
X and Y F-numbers for each field angle =5YbK1Q^
X 1.992151 2.046117 2.172037 2.364546 c+8 Y|GB
Y 1.992151 2.338546 3.121385 4.866429 HsT6 #K
0 .999 .999 .999 w"O;: `|n
10 .986 .986 .984 Rz6kwh=q
20 .971 .971 .963 ApplWa3
30 .957 .957 .939 7;]IlR6
40 .942 .943 .913 ^BW8zu@=O
50 .928 .929 .883 #cb9g
60 .914 .914 .853 cFuQ>xR1
70 .899 .900 .821 ")nKFs5
80 .885 .886 .789 PGVP0H+RV
7_rDNK@e
第二列为理想的MTF值,最后一列为实际值,