ah, perhaps I mis-read then. I had thought the mount was wanted and the focus was made of sliding pvc tubes and affixed... which has been done before.
but, that said, I do have a "macro-focusing" converter made by Komura which does seem to have some sort of helical. At 14:22 15-01-03 +0100, you wrote: >I didn't notice 2x converters and extension tubes which include helical >focusing; which brands and types must we find. In contrast, typical 135 >mm telephotos permit around 12 mm of focus adjustment. > >Bob > > >At 20:20 15.01.03 +0800, you wrote: > >>Or sometimes el-cheapo 2x converters, or extension tubes... >>these are also found cheaply. >> >>At 11:24 15-01-03 +0100, you wrote: >> >This is possibly a help but I admit problems! I just returned from London >> >and Jessops Classic was offering old (low grade) 35 mm lenses for one pound >> >each. Your cost would be almost all postage. Some member of this group >> >might buy a bunch and ship them to anyone needing one. ( I didn't buy >> >many because of overweight baggage problems.) Of course, the mounts would >> >be most useful for smaller lenses. >> > >> >At 17:47 14.01.03 -0500, you wrote: >> >>Hi Folks, >> >> >> >>Does anyone know a source of cheap helical focus mounts? Can I make one >> >>out of PVC pipe fittings or something similar? >> >> >> >>Thanks, >> >>Dai. >> >> >> > >>_______________________________________________ >>Cameramakers mailing list >>[EMAIL PROTECTED] >>http://rmp.opusis.com/mailman/listinfo/cameramakers > >_______________________________________________ >Cameramakers mailing list >[EMAIL PROTECTED] >http://rmp.opusis.com/mailman/listinfo/cameramakers > _______________________________________________ Cameramakers mailing list [EMAIL PROTECTED] http://rmp.opusis.com/mailman/listinfo/cameramakers
