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Recipe for BW with Channel Mixer.

Patrick Lavoie , Oct 13, 2005; 11:52 p.m.

Hi this is not a question! Only infos for people who like working with channel mixer. Your comment are always a pleasure : ) have fun. Use them with channel mixer red-green-blue. In monochrome mode._Agfa 200X: 18,41,41 / Agfapan 25: 25,39,36 / Agfapan 100: 21,40,39 / Agfapan 400: 20,41,39 / Ilford Delta 100: 21,42,37 / Ilford Delta 400: 22,42,36 / Ilford Delta 400 Pro & 3200: 31,36,33 / Ilford FP4: 28,41,31 / Ilford HP5: 23,37,40 / Ilford Pan F: 33,36,31 / Ilford SFX: 36,31,33 / Ilford XP2 Super: 21,42,37 / Kodak Tmax 100: 24,37,39 / Kodak Tmax 400: 27,36,37 / Kodak Tri-X: 25,35,40 And these basic ones: Normal Contrast: 43,33,30 /High Contrast: 40,34,60 and at last a generic BW: 24,68,8. I like to 50,50,0 or 25,75,0.

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hugh crawford , Oct 14, 2005; 01:45 a.m.

You forgot Kodak HIE! ( infrared ) 100,100,-100 . Remember to run the saturation up before converting to BW with the Channel Mixer!

Gustavo Orensztajn , Oct 14, 2005; 08:27 a.m.

This is really good, I did not know about this! So, can you take a BW converted by RGB channels and then add these values to the channel mixer?

Thanks

Edward Ingold , Oct 14, 2005; 09:04 a.m.

This is really interesting! I've never seen such a comprehensive compilation. How did you arrive at these settings, Patrick?

Gustavo, these are channel mixer settings to emulate various B&W emulsions with color images.

Patrick Lavoie , Oct 14, 2005; 11:35 a.m.

HUGH_thanks for the info, i will add it. I did know about it. I do my IR in another way in 4-5 step.

Patrick Lavoie , Oct 14, 2005; 11:35 a.m.

GUSTAVO_No! You have to work with a Color RGB.

Patrick Lavoie , Oct 14, 2005; 11:39 a.m.

EDWARD_I found many of these around the web, other was discover by trial and error, and as a professional photoretoucher i develop a good eye to mimic some process. They are probably not perfect but pretty close to reality.

M C , Oct 14, 2005; 02:34 p.m.

I'm not understanding this...

Can you put it for a newbie? Wistler

Patrick Lavoie , Oct 14, 2005; 02:52 p.m.

In Photoshop, if you whant to do nice BW from a color picture in RGB mode, use channel mixer in monochrome mode, enter those value at the appropriate place. could not be more newbie than this : )

Chris Townsend , Oct 16, 2005; 09:34 p.m.

Wonderful results on a few images I tried it on. Thank you!


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