Hi there,
I've just been and bought myself a Visoflex I, with bellows and lens shade to tack onto my 1937 Leica II for macro work.
The Visoflex and bellows are in really good condition and I was fortunate to get a stack of adapters for it as well. I've just shot a couple of rolls of Velvia 100 using my pre-war 9cm f4 Elmar lens.
As for exposure - well I did that the hard way too

Out came 'The Leica Way', several formulas and a calculator. Now I've to wait and see what the results are when the film comes back from the lab (if I'd have been clever, I'd have shot B&W and processed it myself!).
Anyhow, here's the setup...
I'm also going to start a blog based on the trials, tribulations and success(?) with using this setup at
Leica Macro
Cheers,
David.