(The MS Optical Super Triplet adapted to the NEX-7.)
The image quality is very good, I believe, with one exception which is not caused by the lens but rather by the NEX-7: color shifting across the field, with magenta colored corners. The magenta doesn’t show up always, or it is sometimes more enhanced and sometimes very subtle. In b/w images it doesn’t play a role, of course. Otherwise the lens is sharp and shows no noteworthy distortions or CAs.
More information about the lens can be found here: http://www.japanexposures.com/2011/05/25/ms-optical-super-triplet-perar-3-535-mark-ii/
(Key features, taken from that web page:)
- Very high optical quality triplet formula lens
- Ultra compact design, weight 75g, collapsible (4.2mm height when collapsed)
- Premium quality Tantalum glass, superior to Trium and Lanthanum glass with best refractive qualities
- Refined triplet design with two double thickness positive lenses, superior to Tessar design
- Round aperture for smooth and pleasing bokeh (Edmund Optics, Made in USA)
- Minimum focus distance 0.8m
- ALL glass surfaces multicoated, 97% light transmission
- Vivid, real and beautiful color reproduction, high contrast high resolution images
- Second lot of 200 lenses (serial 201-400), designed, manufactured and hand-assembled in Japan by Mr Sadoyasu Miyazaki
A comparison with other 35mm lenses for Leica M mounts: http://www.stevehuffphoto.com/2012/03/28/the-great-35mm-rangefinder-lens-shootout-by-brad-husick/

(Bern, Einsteinterrasse. This is the same location and situation as on the shot below, but taken from behind rather than from below)
(Bern, Einsteinterrasse)

(Bern, Waisenhausplatz)

(Bern, Bundesplatz)

(Bern, Bundesplatz. This one is not really sharp but I had to be fast to capture that smile. Two shots taken just a few seconds later are tack sharp, but boring because the smile is gone)
{If you would like to use any of my photos, please consider them as published under the “creative commons” licence (see http://en.wikipedia.org/wiki/Creative_Commons for details). In short: you may use any of these photos as long as you do not charge for them, and you have to mention my name as the owner/author in a clearly visible way. In simple words: feel free to use, but give credit and don’t steel.
Time.Captured. (Karsten Seiferlin)}

