There are obvious and visible differences between the 3E and its current fixed focal length lenses, however. To appreciate the importance of these differences I would like to draw a distinction between two types of Leica M users. The Heavy Duty user who demands and needs the highest optical performance and has the expertise to extract the full performance potential out of the Leica lenses. And the Normal user who is quite critical in the performance area, but whose picture taking style is a somewhat less demanding. Extremely fine detail has somewhat softer edges, but is still quite visible.
Some astigmatism lowers the contrast here.
The extreme outer area and corners are soft with fine detail just visible. Extremely fine detail is just visible in the center, but in the outer zone barely so. The corners are on the same level as the 50 position. Quite remarkable here is the uniform performance over the total image field. The close-up performance again shows a high contrast image with excellent detail rendition over the whole image field.