Luddite Frank
Well-known
I think we have to define classic, yes.
Perhaps you are correct about the Summicron. I equate it in my mind mated to an M3, therefore I think of it as an M lens. But as the culmination of the Leica F2 50mm lenses perhaps it is also a classic LTM lens. If so, it's place is earned by being the height of development of this 50mm lens variant. Does this mean the Summitar should not be considered a classic as it was so eclipsed?
Of course, both Joe DiMaggio and Mickey Mantle are Hall of Fame centerfielders based on their own merits.
I think we have to have some way to separate the true classics other than to create a list of all, or our favorite lenses. Not every excellent player belongs in the Hall of Fame.
I think the one un-arguable LTM "Classic" would be the 50mm Elmar.
And, though it's not LTM, the Leitz Anastigmat / Elmax deserve honorable mention.