Archived posting to the Leica Users Group, 1996/09/05
[Author Prev] [Author Next] [Thread Prev] [Thread Next] [Author Index] [Topic Index] [Home] [Search]I've just visited the Kiev Report home page and if you follow the link to "35mm RFs" then down at the bottom, past all the Feds and such is a data table for Leica thread lenses that gives figures for resolution. And guess what- the figures are identical with what was on the certificate that accompanied my Jupiter 9 85mm/f2 lens; centre 30, edge 18. Except that it says "lp/mm" which would presumably stand for "line pairs per mm". And most of the other LTM lenses are comparable, but I recall the 28mm Orion stands out somewhat with a central resolution of 45 lp/mm. Curiouser and curiouser! So maybe these resolution figures were arrived at using a method that fails to do these lenses justice? In any event, my 85/2 Jupiter 9 would appear to be average for this lens. But I still fail to understand what is going on here... -- joe b.