%% Construction data for Nikon 24mm f/2.8 manual focus lens
% Looks very similar to the pre-AI 24/2.8
% This is a retrofocus design typical of wide angle SLR lenses
% Data from US patent reissue 27,799
% Refractive index is n_d, 587.56nm
% Note source construction data are normalized to unit focal length, scaled
% up here to 24mm.
R = [
    2.5000
    0.8958
    3.7500
   -3.7500
    1.2500
    0.4583
    1.0521
   -0.7742
   -1.4542
   -3.5417
    1.3500
   -5.0000
    1.1729
   -0.8333
    8.0000
   -1.9423
   ] * 24.0;
t = [
    0.
    0.1125
    0.2625
    0.2292
    0.0042
    0.1125
    0.4083
    0.1667
    0.1250
    0.1042
    0.2208
    0.0979
    0.0417
    0.2250
    0.0042
    0.1458
    0.
    ] * 24.0;
n = [
    1.
    1.62041
    1.
    1.62041
    1.
    1.62041
    1.
    1.62004
    1.51823
    1.
    1.7847
    1.
    1.7847
    1.62041
    1.
    1.744
    1.
    ];