Archived posting to the Leica Users Group, 1998/02/03
[Author Prev] [Author Next] [Thread Prev] [Thread Next] [Author Index] [Topic Index] [Home] [Search]>Erwin, > >I checked in Lager's book: Leica: An Illustrated History Vol II Lenses. > >He shows two different cross sections for the collapsible (SOOIC, SOOIC-M) and >rigid (SOSTA, SOSIC/SOMNI) Summicrons (SM and M respectively) on p54 (SM) >and p >166-7 (M). Both seven element designs. Apparently at different times Leitz >showed different cross sections with the rigid lens in brochures. > >But they ARE different. Just look at the lenses side by side. > >Adam > Yes, some more people referred to that book and the illustrations. I also acknowledged the existance of both versions at the LUG some days ago. I do have these original illustrations myself. There is now some more evidence that the two versions exist. Question remains why Leitz never acknowledged the change and still make no reference to the fact that two illustrations are circulating, referring to two different versions of the same optical design. Biggest question however is the difference in optical quality. I am doing a side by side test quite soon. Erwin