Archived posting to the Leica Users Group, 2000/04/11
[Author Prev] [Author Next] [Thread Prev] [Thread Next] [Author Index] [Topic Index] [Home] [Search]The DR is optically identical to the "rigid" Summicron. All the best! Raimo photos at http://personal.inet.fi/private/raimo.korhonen - -----Alkuperäinen viesti----- Lähettäjä: Stephen Gandy <Stephen@CameraQuest.com> Vastaanottaja: leica-users@mejac.palo-alto.ca.us <leica-users@mejac.palo-alto.ca.us> Päivä: 11. huhtikuuta 2000 21:05 Aihe: Re: [Leica] Re: Old or new Summicron tested? >Hi Larry, > >I have close to a complete set of Moderns, they form the backbone of my Photo >Library. From time to time they refer to the test, sometimes in "Too Hot to >Handle." It was indeed the DR. > >Stephen Gandy > >LRZeitlin@aol.com wrote: > >> Steven Gandy writes <<the Summicron Modern tested out at 105 l/mm was a 50 >> Dual Range>> >> >> Steven, >> >> Your information may be better than mine -and if so, I stand corrected. >> However, the Modern Photography lens test article of October 1978, which I >> have before me, makes no mention of the specific type of Summicron lens used >> to reach 105 l/mm. A decade before the article appeared, Leica had changed >> the formula for the 50 mm Summicron emphasising contrast and even >> illumination over resolution in the newer 6 element model. Since I was >> curious about which Summicron was used, I called one of the article’s >> authors, Bennett Sherman. He told me that since the purpose was to illustrate >> the highest resolution that could be achieved, they fudged by using the older >> 7 element lens. It was a long time ago. I wasn’t there when the lenses were >> tested and certainly my recollection would be classified as hearsay by one of >> the many LUG lawyers. My personal experience is that the older Summicron is >> marginally sharper than the newer one so I would not be surprised to find >> that it was the one used. >> >> Regards, LarryZ >