[Guest]

For SLRs there was no such Voigtlander, a redesign of any range finder UWA won't be of much help ....

For mirrorless APS-C there is the Samyang 12mm f2:

http://www.lenstip.com/404.11-Lens_revie...mmary.html

Only weighs 245 grams. That is only 5 grams more than my Voigtlander 20mm f3.5 SL II N.

Sure; I was thinking of the comparison on FF mirrorless between using the new Canon, and one of the voigtlanders.

The 12mm Samyang on APSC is not relevant though, because that has roughly an 18mm equiv. field of view...