Hmm, well my eBay purchase for a lens fell through, so I'm looking again. I think the 35mm Nokton is the one for me, and KEH has one second/user but excellent condition for $499. My ideal focal length would probably be 40 or 50mm, however, the ZI has no 40mm frame lines, and although I know the 35mm lines will likely be just fine for 40mm, the picky part of my brain would be annoyed by seeing "35" in the viewfinder, when I know it's 40mm.
50mm would be fine too, but I wonder if the lens is so big that I'd see it thorough the view finder, that may annoy me a little too... I know, I'm a pain.
Low light is where I take most of my photos, so a Nokton 35mm 1.4 seems to tick all boxes, it's fast, the ZI has 35mm frame lines, and it's small enough that I doubt I'd see it in the finder.
Before I purchase from KEH, any other dealers I should check? I'm in the UK, but it's cheaper to ship one from the states than buy here, in fact it's probably cheaper to fly to New York and pick one up than buy here...
Cheers
Garry