Quote Originally Posted by Bruce (Camclicker)
I recently purchased a used Omega D55 with Chromega color head. I've been using a Beseler 23 C dichoric for B/W printing. Both the Beseler and Chromega are noted in paper data sheets that Kodak CC filters are the equilivant and Magenta 200 equals a grade 5.
However, the Chromega Magenta filter only goes to M-171. The Durst filter valuses go to 170.
Can somebody enlighten me: DOES CHROMEGA USE THE KODAK OR DURST FILTERING VALUES?
Ah ... a spin into the twilight zone. What paper/s are you using? Ilford *suggests* (n.b. "suggests") either single or dual dichroic head settings, and they just are not the same.

Many moons ago I was became dissatisfied with the table giving the dichro filter settings, or more properly, the results they gave. I obtained the Ilford gelatin filter set (#0, 1/2, 1, etc.,) and with a lot of patience found that the fitration through the filters did *NOT* look much like the numbers in either table.

I plotted new curves, matching the filters ... and ... success!!!

I am convinced that there must be a LOT of variablity, enlarger-filter-set to enlager-filter set. I could give you *my* results - but I am not sure (seriously not sure) that they would fit your enlarger.

In NO case did the filtration exceed the capacity of the D5500 head ... If I remember correctly, the highest numbers I saw were in the 150's.