I am looking for a starting point for Y/M dual filter use. I am a little confused as the papers claim the Chormega to be Kodak compatible.
The filter values on my head run from 0 to 170 as with some Durst-Heads. Kodaks seem to run up to 200. Is my Chromega head special in any respect?
You have the opportunity to free yourself from the concept of paper grades. They are unnecessary with VC paper. Try starting with no filtration, add yellow to reduce the contrast, add magenta to increase it. Eventually, you will settle on a good starting filtration.
Ulrich,
I suggest experimenting with Split Grade printing. With that enlarger I would try Y150 and M170... Read Les McLean's article on Split Grade, do a google search and read some other instructions and give it a try!
Neal's suggestion is certainly a fine one. If you want to calibrate your system I suggest reading Paul Butzi's article HERE .
I am looking for a starting point for Y/M dual filter use. I am a little confused as the papers claim the Chormega to be Kodak compatible.
The filter values on my head run from 0 to 170 as with some Durst-Heads. Kodaks seem to run up to 200. Is my Chromega head special in any respect?
Use the data sheets as a "starting point". The Chromega head is not "special", it just won't go to 200! I use Multigrade paper, and for that, 25M is grade 3 and 50M is grade 3.5. But, the neg I was printing last night needed 40M! Such is the advantage of a dichroic head! Enjoy!
Thank you for replies. Up till now I am using a Dunco with Ilford VC-Head. My negatives are such that I usually get away with dialing in 2.5. I rarely need to adjust a little bit up or down and mostly don't have to adjust exposure for that. Exposure is measured with an old Wallner Report as a starting point. I'd much like to transfer this workflow to the new enlarger.