[Leica] Leica M8 + Visoflex question

[john at chiaroscuro.co.nz (John McMaster)]

I think a later SIII prism (or a chimney vf) is needed due to the height of
the M8.

If a screw mount 280mm then the OUBIO (16466) mounts to the Viso and the
lens screws into this with focussing to infinity.
http://www.l-camera-forum.com/leica-wiki.en/index.php/OUBIO 
Also the lens mount (on a 280mm) unscrews and can be adapted to the bellows
II (16598) to allow from infinity to closer focus than standard lens can. I
assume than the 200mm is similar but I have experience of the 280mm ;-)

john

-----Original Message-----

I think I've read right where the Visoflex II or III can be used on the M8?

If so, which extension tube would one need for a 200mm or 280mm Telyt on the
Viso?