>>3593812>Apocromatic is just a specific design of lensNo, it isn't.
It's a class of lens who are measures to have very low levels of longitudinal chromatic aberration.
It's not a "lens design", There is no optical formula with the name "Apocromatic".
>What you do to get there is not important to end user.The problem is most lenses don't get there at all. Those lenses fall outside of the name Apochromatic.
