Archived posting to the Leica Users Group, 2013/11/19
[Author Prev] [Author Next] [Thread Prev] [Thread Next] [Author Index] [Topic Index] [Home] [Search]Sorry, that should read: "Completely...." On Tue, 19 Nov 2013, Akhil Lal wrote: > complete different test protocol. Cannot be compared. > > On Tue, 19 Nov 2013 lrzeitlin at aol.com wrote: > >>> From LensTip.com >> "The Zeiss Otus 1.4/55 compares very favourably with its rivals because >> at >> the maximum relative aperture it reaches 38 lpmm. On stopping down the >> situation only improves and by f/4.0 the MTFs are on a record-breaking >> level of 50 lpmm. The chart below makes it easier to see that the Otus is >> really far better than all its competitors. " >> >> In October, 1978 the magazine "Modern Photography" in a comprehensive >> test >> of normal lenses achieved a resolution of 102 lpmm with a Leica DR >> Summicron 50 mm lens using Micro-Ektachrome film. Other lenses were close >> behind. Those made by Nikon, Canon, Minolta, Pentax and Olympus all >> reached >> 100 lpmm. For those who care to look it up, the article was titled "How >> Sharp Can you Get?" The experiment was critically evaluated and appeared >> sound. Images of the results are presented. >> >> That was 35 years ago. What am I missing here? >> >> Larry Z >> >> >> >> _______________________________________________ >> Leica Users Group. >> See http://leica-users.org/mailman/listinfo/lug for more information >> >