If the instructions in the book are for Photoshop's Channel Mixer, just be aware that you are working there with the RGB channel data, post raw-conversion. This is close but not quite exactly the same as applying channel modifications on the raw data, which is what you're doing in LR normally.
I'm not so much interested in getting a "film look" or emulating a particular film's spectral characteristics as in making a good monochromatic rendering. The translation of color tone to grayscale tones is a subtle thing as you have to find ways to separate colors which would otherwise render to the same perceptual tone on luminance alone. On Fri, Jan 6, 2012 at 12:12 PM, Christine Aguila <christ...@caguila.com> wrote: > I bought an ebook entitled Black and White in Photoshop CS4 & Lightroom: A > complete integrated workflow solution for creating stunning monochromatic > images in Photoshop CS4, Photoshop Lightroom, and beyond by L. Alsheimer & B. > O'Neil Hughes. > > It's good enough so far and helping to fill in knowledge gaps (big ones) WRT > black and white rendering--skills I hope to improve this year. Anyway, > there's a section on the Channel Mixer in Photoshop and how to use said > feature to replicate various film stocks--even a chart is included with the > channel mixer values, as shown below. > > Being a Lightroom user, can I just use the *black and white mix sliders* in > the develop mode--that is, dial in the Red Green and Blue values suggested in > the chart, then zero out the values for Orange, Yellow, Aqua, Purple, and > Magenta? Or do I have to use Photoshop for this approach? > > Here's the chart. I hope to do some experimenting this afternoon. > > Film Type Red Values Green Values Blue Values > Agfa 200x 18 41 41 > Agfapan 25 25 39 36 > Agfapan 100 21 40 39 > Agfa pan 400 20 41 39 > Ilford Delta 100 21 42 37 > Ilford Delta 400 > Pro & 3200 31 36 33 > Ilford FP4 28 41 31 > Ilford HP5 23 37 40 > Ilford Pan F 3 36 31 > Ilford SFX 36 31 33 > Ilford XPx Super 21 42 37 > Kodak Tmax 100 24 37 39 > Kodak Tmax 400 27 36 37 > Kodak Tri-X 25 35 40 > > In my ebook, this is on page 2970. lol -- Godfrey godfreydigiorgi.posterous.com -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.
