[ftpaddict]

Nono, that Flektogon definitely won't work. Better sell it to me for a heavily discounted price!

[Douglas_of_Sweden]

I've recently bidded on a load of m42 lenses, most of which are carl jeiss..

Will all of them work on my pentax ,provided i have a m42 adaptor..

"CARL ZEISS JENA FLEKTOGON 35mm f/2.8 M42" for example..will it work?

Just watch out if you e.g. bid on ebay on items described as "screw mount" without specifically state it is M42. There is a M39 screw mount (old Zeiss?) and also you can encounter a screw mount that are exactly the same diameter as M42, but a different thread, namely made for the T2 adapter. If so you can get a M42 (or K) T2 adapter, but don't try to hard mounting a T2 thread directly on a M42 camera...I think you could damage the mount.