Archived posting to the Leica Users Group, 2013/11/19
[Author Prev] [Author Next] [Thread Prev] [Thread Next] [Author Index] [Topic Index] [Home] [Search]>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