Can someone explain to me ...
1) What does the column OPD mode correspond to, when you create a 'Paraxial lens' (the column after 'Focal length') ?
2) Is a Paraxial lens aberration-free for any conjugation or magnification ? Should I not enter some magnification somewhere when I parametrize a Paraxial lens ?
3) I did the following test : create a Paraxial lens with focal length 100mm with object at infinite,aperture diameter 25mm, field 15°. Look at spot diagrams (looks great !), look at PSFs (look great !), look at FFT MFT : looks great on axis ... but why is NOT so great off axis ?
Many thanks
Yvan Sortais
Best answer by Berta.Bernad
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