Shouldn't be an issue. With big lenses the camera hangs off them, not the other way around.
Cheers, Dave 2008/11/28 Walter Hamler <[EMAIL PROTECTED]>: > Jim, I think that the 500mm that was modified was a screw mount lens. > I know the one that I saw locally for sale is, and my big concern is > all that weight hanging on a flimsy M-42 adapter. > > Walt > >> What am I missing here? My Pentax K500/4.5 mounts just fine on both my >> K1000 film body and my K20D digital body, with no problem in focusing to >> infinity. Of course, focusing is manual unless I use my F1.7x AF >> Teleconverter behind the lens... -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.