Archived posting to the Leica Users Group, 1999/02/15
[Author Prev] [Author Next] [Thread Prev] [Thread Next] [Author Index] [Topic Index] [Home] [Search]Do you have a written report on the 80 Summilux, Erwin? Francesco At 06:52 AM 2/15/99 , imxputs wrote: >These lenses have a slightly different performance. They are from the same >optical family tree that encompasses the 1,4/50 Summilux-M, 1,0/50 Noctilux-M, >1,4/75 Summilux-M and 1,4/80 Summilux-R. The 1,4/75 and 1.4/80 are NOT >identical in their optical formula. The assertion that they are identical >(some earlier post on the LUG) is not true, but may be inspired by the fact >that the 2,8/90 M and R versions share the same optical system. The 2,8/135 M >and R versions also are identical in their optical parts. >My observation that the 1,4/75 at full aperture has a better performance than >the 1,4/80 is valid and is supported by the fact that the lens prescription is >different. The family resemblance can be seen in the fact that all four >members exhibit low to medium-high contrast at full aperture. More recent >Leica lenses in the 1,4 and 2,0 classes show much higher contrast at the full >aperture setting. Ten years ago I would have given these lenses higher marks >than today. Since the 1,4 and 2,0 ASPH family we are in a different game as >far as full aperture performance is concerned. > > >Erwin >