Mike Johnston wrote: > > > The qualifier is KEY: > > > > simple, if two lenses are equally corrected, the one with less > > elements will be better. ala aspherical designs vs spherical > > only or zooms vs. primes, etc. > > Well, this makes no sense to me. Why would a designer add another element > but to make the lens better corrected? > > --Mike
I thought that was why designers _added_ extra elements in the first place! Why else indeed? It's not "Gee, I need two more lens surfaces!" It's more lke, I still have some spherical (or other) abberation, and I've got as much out of that previous element as I could. We'll just add one more, and be done with it." keith
