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 %2oLND}?z
X and Y F-numbers for each field angle wy_TFV
X 1.992151 2.046117 2.172037 2.364546 G$4lH>A&
Y 1.992151 2.338546 3.121385 4.866429 a@,tf'Sr
0 .999 .999 .999 k<W]VS3N
10 .986 .986 .984 e= "/oo
20 .971 .971 .963 c e=6EYl
30 .957 .957 .939 > KH4X:
40 .942 .943 .913 \{+7`4g
50 .928 .929 .883 n*iaNaU"'
60 .914 .914 .853 +U%lWE%
70 .899 .900 .821 ?-\K Vha
80 .885 .886 .789 Q:VD2<2
N M~e
第二列为理想的MTF值,最后一列为实际值,