For a TRUE Voigtlaender fan this lens (2/50 classic Heliar) is a MUST.
Voigtlaender Braunschweig never made a Heliar lens for 35mm film. There is a story that the optical designer of this lens, Dr.A.W.Tronnier was instructed by chairman Adolf Oehme not to fully correct astigmatism and Coma at the medium format Heliar to keep the courting-effective "filmy sharpness" (which in fact was unsharpness wide-open due to undercorrection of optical errors).
Maybe this was the reason Voigtlaender felt that the Heliar was no 35mm lens at that time. Alas, the modern designed, fully corrected 5-element lens Apo-Lanthar (advancement of the Heliar) don't made it to 35mm film either!
So it took a Voigtlaender fan almost 50 years to the 2001 Heliar edition to see what's in this concept. To be honest; I don't expect great sharpness at f/2.0 from a 5-elements-design but a classical footprint. But at f/8 my expectations *are* high...
A Summitar is a 7-elements-design, very special with its cemented front-lens, but still a Gaussian.
What Mr. Kobayashi is doing is untypical, borderline to insane for a manager of an optical company: prove of concepts almost 50 years after it was sunk - just to show it was sunk not for lack of performance... in this doing he will finally, and 100% earn the right on the famous name, what he is licensed to use...
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