A few weeks ago I ordered a manual focus Voigtlander Color Skopar SL II 28mm f/2.8 lens. The lens debuted in October 2012, and there has been very little press coverage on it now that it's out.
Now that it arrived, I've started to try it out. The lens vignettes pretty strongly at f/2.8, but that disappears by f/4. The centre image quality is excellent, even at f/2.8. The corners are soft until stopped down to about f/8, so it's probably not an ideal landscape photography lens. That being said, it's light weight makes it a great lens to pack when you're going for a long walk and don't feel like lugging a heavier lens. The tiny profile also prevents you from attracting too much attention. Even a 5D mkIII looks somewhat unassuming when equipped with this lens.
Another great feature is the accurate hyperfocal distance markings on the lens.
Here is a photo taken from a quick walk with the dog today. I wanted to take more, but he kept pulling the leash as I was trying to hold still! LOL
The vignetting in this shot was added in POST.
The hood in the picture is a 3rd party ebay hood. It protects the lens without adding to the vignetting.