2 ms·
a good telephoto lens will have about 90-95% MTF at 40 lp/mm in the field center, with a focal distance of 200mm, corresponding to the Nyquist pixel pitch of 1c
by anovikov 12y ago
a good telephoto lens will have about 90-95% MTF at 40 lp/mm in the field center, with a focal distance of 200mm, corresponding to the Nyquist pixel pitch of 1cm at 1000 ft. So hopefully at least 20-50% MTF at double the pixels. hard to tell what's so special here. 1000ft is too little for atmospheric distortion to become a problem.