On the issue of keeping the specimen stable, is it possible to use a vacuum? What I am visualizing is a glass plate with many many fine holes drilled through, place a weak vacuum under the glass plate to "pull" the specimen into place. I have seen ads for something like that. Jewelry making? Wood working? An enlarger base plate? Obviously still need to deal with all of the other issues like possible glare/reflection. But the notion of cross-polarizing the lights and camera might work...
stan On Jan 23, 2008, at 9:18 PM, William Robb wrote: > > ----- Original Message ----- > From: "Doug Franklin" > Subject: Re: Macro setup problem > > >> Leon Altoff wrote: >> >>> Thanks for the ideas and if anyone has any more keep them coming. >> >> A small dab of agar, glycerin, or gelatin, on the end of the dowel to >> keep the specimen in place at angles it wouldn't normally want to >> stay in. >> >> Maybe a sheet of glass or perspex that's larger than the camera's >> field >> of view in your shooting setup, then arrange the camera and flash >> (es) so >> you don't get reflections ... possibly requiring polarizers, though I >> don't know if perspex polarizes reflections the way most glasses do. >> Just put the specimen on the sheet instead of trying to perch it on a >> dowel. Sheet has to be scratch free (that's why glass might be >> better) >> and /spotlessly/ clean. Still need a way to deal with getting the >> specimen at angles which gravity decrees not to be stable. > > Depending on Leons budget, he might want to polarize his lights. > > William Robb > > > -- > PDML Pentax-Discuss Mail List > [email protected] > http://pdml.net/mailman/listinfo/pdml_pdml.net > to UNSUBSCRIBE from the PDML, please visit the link directly above > and follow the directions. -- PDML Pentax-Discuss Mail List [email protected] http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.
