Voigtlander lenses 12/5.6 and 15/4.5 asph are originaly made in screw in mounts to fit leica or bessa camers. There is a company in Munich called Zoerk that takes those lenses and modifies them so you can use them on Contax g2. You focus using scale ( just like you would focus a hologon or any manual focus lens). You frame the shot using supplied external viewfinder ( just like you would with Hologon). Since on any of these lenses rear element sticks out too much, external meter is used for exposure, so the reading will be the same with all the lenses.
Now I see no reason to get Zoerk converted lens. It cost twice as much as you would get a second body and a lens from Voigtlander. I did as I mentioned in previous email get a body and lens for $430 and i love it. When few years back I used 12 and 15 side by sice 12 had a much bigger fall off so i settled for 15. Only disadvantage that you may have with Voigt. lenses is that there are no center filters available for them, so fall off can't be corrected in any circumstances. And of course body of the camera is not AE or motordrived.
Matt
Now I see no reason to get Zoerk converted lens. It cost twice as much as you would get a second body and a lens from Voigtlander. I did as I mentioned in previous email get a body and lens for $430 and i love it. When few years back I used 12 and 15 side by sice 12 had a much bigger fall off so i settled for 15. Only disadvantage that you may have with Voigt. lenses is that there are no center filters available for them, so fall off can't be corrected in any circumstances. And of course body of the camera is not AE or motordrived.
Matt