Can anyone who owns the Voigt 12mm II and either of the Voigt 10mm or the 12mm III (when available) compare them? I own the 12mm II and I would like to know if there's any reasons to consider complimenting it with the 10mm or replacing it with the 12mm III. I don't expect to do so, but I would like to know if others have been impressed with one of the two new lenses relative to the older 12mm II. Thanks.