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 ,P70Jb
X and Y F-numbers for each field angle Tk:h@F|B.|
X 1.992151 2.046117 2.172037 2.364546 "J[K 3
Y 1.992151 2.338546 3.121385 4.866429 j/f?"VEr
0 .999 .999 .999 !`,Sfqij
10 .986 .986 .984 Rld!,t
20 .971 .971 .963 hog=ut
30 .957 .957 .939 WSp
40 .942 .943 .913 ;U.hxh;+
50 .928 .929 .883 ujR_"r|l
60 .914 .914 .853 uao0_swW5
70 .899 .900 .821 Kgi<UkFP
80 .885 .886 .789 %t" CX5n
N D(/uyI
第二列为理想的MTF值,最后一列为实际值,