Adox MCP - Durst M670 CLS (Max. 170) filter settings

I recently aquired a Durst M670 and I can't find the gradation settings for Adox MCP/MCC paper anywhere. My other Durst enlargers go up to 130 and this to 170...

Does anyone have a table with the correct grade - dual (y/m) color settings?

Thanks!

isn't there a little sheet in the paper box with them on. Usually Durst figures include both the 130 and the 170 figures.

RobC said:

isn't there a little sheet in the paper box with them on. Usually Durst figures include both the 130 and the 170 figures.

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Can't find the paper in the box. Ilford has a paper which says the grades for the paper for both 130 and 170. But is not the same for Adox paper right?

here's Ilfords figures for Ilford papers. I looked at Adox sites datasheets and they only quote figures CLS 501 head which is 130 units.
Comparing the adox 130 figures with dursts 130 figures they are fairly different but without any published figures I think all you can do is make a best guess based on the differences between the 130 figures from both adox and ilford. It may be a good idea to email Adox and ask for them becasue there must be loads of people with 170 unit dursts. My Modular 70 is a 170 unit Durst (but I also have a CLS 501 130 unit head on my L1200)



You can read Ralph Labrechts guide to calibrating a colour head from below pdf but I think I would lose the will to live before going through that test procedure again.

http://www.waybeyondmonochrome.com/WBM2/TOC_files/CntrstCtrlClrEnlargersEd2.pdf

Just observe what you get with equal amounts of yellow and magenta, then think 'harder' or 'softer'. Just for fun, make a print with maximum yellow and another with maximum magenta. I am genuinely curious what benefit there is to be had by matching a notional contrast grade, when different parts of almost any finished print will be printed with differing filtration.

MartinP said:

Just observe what you get with equal amounts of yellow and magenta, then think 'harder' or 'softer'. Just for fun, make a print with maximum yellow and another with maximum magenta. I am genuinely curious what benefit there is to be had by matching a notional contrast grade, when different parts of almost any finished print will be printed with differing filtration.

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The utility of 'the chart' is that by following the empiric data, one can have approximate equal printing times when changing printing contrast.