The ZI I had for almost three years was very happily mated to a Voigtlander Heliar Black 50mm, f2 M mount version. It never let me down. But good luck finding one.
The optics are the same in the nickel version, right? CameraQuest still lists those available---they aren't especially cheap, but in the context of the price of a ZI body, what's a couple of hundred extra bucks for a really good lens?
San Diego, CA, USA
Although the moon is smaller than the earth, they are about the same distance apart.
I think it's out of production. There probably are still a number of new cameras in the supply channel and at some stores. I've been toying with the idea of picking up a second body. Perhaps a black one this time around.