>>I think it is possible to eliminate Distorion completely.
>Depends on the definition. There was recently a huge debate on
>rec.photo.equip.largeformat about APO lenses.
Distorsion has nothing to do with APO definition.
APO is a lens that has the highest correction for chromatic aberration:
3 distinct wavelenght (=colors) are focused on the same plane, and other
colors will focus very near, so white points appear white, without colored
fringes.
Ralf
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