Archived posting to the Leica Users Group, 2000/02/19
[Author Prev] [Author Next] [Thread Prev] [Thread Next] [Author Index] [Topic Index] [Home] [Search]Austin Franklin wrote: > And I quote: > > "The first Summilux 35mm ASPH possessed two aspheric surfaces, polished > with the normal technology available. It had 9 elements and had a limited > production run of 2000 lenses at a price in 1990/91 that made Leica lovers > faint. In 1994 The second version has been inroduced, now as a normal > production lens. Still 9 lenselements, but a different design (different > surface and different technique, pressed). pressing is cheaper than > polishing, but the change from two to one surface has been explained by > Zeiss, who maintain that two aspherics generate more problems than they > solve. Leica now seems to agree. Austin, All I can say, and I know what I'm talking about, is that Leica was able to produce a 35/1,4 Asph with one aspheric element as good as the 35/1,4 Aspherical with two. Lucien