Archived posting to the Leica Users Group, 2001/07/21
[Author Prev] [Author Next] [Thread Prev] [Thread Next] [Author Index] [Topic Index] [Home] [Search]Dans un courrier daté du 21/07/01 13:23:26 Paris, Madrid (heure d'été), mxsmanic@hotmail.com a écrit : > > How much lp/mm for 2.8 / 90 , 35 Asph , 50 > > 'cron late , and 3E please ? > > Erwin doesn't provide MTF figures in his book for the individual lenses, > probably because, as he points out, they tend to confuse more than inform > outside the realm of specialists. He does mention lp/mm figures for a few > lenses in his descriptions, including the aforementioned 90, which he says > is > one of the very best lenses Leica has ever made. A handful of lenses are so > sharp that they are diffraction limited, with resolutions surpassing 500 lp/ > mm! > That will leave even Technical Pan in the dust. Don't count on getting that > handheld, though! > > > Sorry I don't have the book yet , can you make > > a small debrief for us ? > > It is a very nice hardbound volume well worth the $60 or so I paid for it. > The > author describes the history of lens design and construction at Leica, the > principles of lens design itself, and of course the characteristics of each > of > the lenses that Leica has made, from the most common to the most rare. He > says > he has actually tested them all, which must have been quite a project. > > I haven't finished reading the book by any means but it looks great so far. > > Ok, so obviously i 've got to buy it in the next future ! Thanks a lot. JO GOODTIMES -FRANCE/ AIRBORNE RADAR TECH / LIVE FREE OR DIE will soon be moving to Metz