Archived posting to the Leica Users Group, 2000/08/24
[Author Prev] [Author Next] [Thread Prev] [Thread Next] [Author Index] [Topic Index] [Home] [Search]Jim, Omega-Satter publishes a datasheet with their Forte Polygrade V Elegance FB and here's what they have to say: Most colorheads fall into two groups: dichroic filters that match Kodak specifications or Durst specifications. Kodak: Omega, Chromega, De Vere, Beseler, Saunders Durst: Durst, Kaiser, Leitz, Dunco Grade Kodak Durst 00 160Y N/A 0 130Y 145Y 1 80Y 90Y 2 25Y 25Y 3 10M No filter 4 80M 90M 5 130M 150M Also, a few months ago, View Camera Magazine (look for John Malkovich as Satan) had an Omega enlarger article which suggested 2-filter combos to try also. I did the associated modification (turn the Cyan filter into an ND in order so I could dial in exposure compensation rather than change exposure times) and I find it works pretty well until I get past Grade 3.5 when the ND settings no longer seem accurate. I don't know if the layers in my MG papers simply have differing speeds, if I'm running into reciprocity effects (my usual exposure time is around 35 seconds) or the article just contains some typos. Jeff Segawa no archive Jim Brick wrote: > > Can anyone point me to a www site that gives color head CC equivalents for > paper grades using multi or poly grade B&W paper? > > A friend of mine teaches photography in a high school (East Palo Alto, CA) > and is setting up a darkroom in an unused bathroom. A Beseler 23c was > donated and she needs to know what to dial-in for paper grades. > > Many thanks, > > Jim > > jim_brick@agilent.com