Archived posting to the Leica Users Group, 1997/05/16
[Author Prev] [Author Next] [Thread Prev] [Thread Next] [Author Index] [Topic Index] [Home] [Search]Gerard Captijn wrote: > > The 90mmf/4 Rokkor was a lens produced by Leitz Wetzlar. Although its > optical construction was identical to todays Elmarit-M, its performance is > comparable to the Tele-Elmarit-M. > The 90/4 Rokkor M for the CLE is a different lens than the 90/4 for the CL. While both are 4 element and similar, the diagrams which I have seem to show slightly different formulas through different element curvatures. The differences which I am aware of are as follows: 90/4 Elmar for CL 90/4 M Rokkor for CLE manufacture Germany "Made in Japan" cam sharp curve standard M cam filters Series 5.5 40.5 coating single multi lable Elmar C "M-Rokkor" Stephen Gandy