At 9:08 PM -0500 3/1/01, G.Penate wrote: >----- Original Message ----- >From: "Sam Wang" <[EMAIL PROTECTED]> > > > Does anyone have a source for fine ground glass? The ones available > > from my local glass shop is not fine enough for view camera use. > > > > Also fresnel lens sources? The office supply variety can be very poor > > optically. > >Edmund Scientific comes to my mind. Unfortunately all they have are sandblasted ones, which I don't believe would work as well as the etched variety - not as bright. But I can't speak with authority here. Anyone knows for sure? >You can make your own GG, also. It takes some grinding compound, water, >elbow grease and 10 minutes or so. I did that once. All I could say is that theoretically it could work. My results however resembled the sandblasted kind, with more unevenness. The best home remedies so far seem to be chemically etching it, or to tape 3M Magic tape on glass or plexiglass. At one time I came across some rigid fresnel lenses with goundglass surface on the other side, big enough for 5x7. Wish I had bought a ton of it. Sam Wang _______________________________________________ Cameramakers mailing list [EMAIL PROTECTED] http://rmp.opusis.com/mailman/listinfo/cameramakers
