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 :!fY;c?
X and Y F-numbers for each field angle "d
M-3o<
X 1.992151 2.046117 2.172037 2.364546 i~M-V=Zg
Y 1.992151 2.338546 3.121385 4.866429 %zDi|WZ
0 .999 .999 .999 fjuPGg~
10 .986 .986 .984 vkM_a}%<
20 .971 .971 .963 6{g&9~V
30 .957 .957 .939 I?%#`Rvu
40 .942 .943 .913 /5
OQ0{8p
50 .928 .929 .883 i1]}Q$
60 .914 .914 .853 bX5/xf$q
70 .899 .900 .821 73{<;z}i
80 .885 .886 .789 Gf9O\wrs
-$@'@U
第二列为理想的MTF值,最后一列为实际值,