>From: "Richard Knoppow" <dickburk@xxxxxxxxxxxxx> >Since the f/2.8 lens is obviously derived from the Tessar >the Xenar name is appropriate, since the f/2 lens appears to >be derived from the Biotar the Xenon name is appropriate. Some pre-war Retina II cameras have the f:2 Xenon, and some have the f:2,8 Xenon. But I believe the latter really is the five element Xenar. Maybe they used the Xenon name to make this 2,8 lens to stand out from the ordinary Xenar? I sent an email to Schneider about this, and I hope they can dig up some old information about this. :-) /Patric _________________________________________________________________ Lättare att hitta drömresan med MSN Resor http://www.msn.se/resor/