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Thread: Test image for b&w digital calibration

  1. #1

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    Test image for b&w digital calibration

    I am trying to do a book with the Lulu publishing service. My first proofs were magenta. I need to figure out the right correction to apply, which would be very easy if I had a test image with samples of different corrections - sort of a color wheel for black and white. Anyone have any ideas or links?

  2. #2
    Resident Heretic Bruce Watson's Avatar
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    Test image for b&w digital calibration

    They don't supply an ICC profile for their press?

    Bruce Watson

  3. #3
    Michael E. Gordon
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    Test image for b&w digital calibration

    It would help to know more about what you're doing. Color images, color book? B/w images with magenta metamerism? What is Lulu's printing process?

  4. #4
    Michael E. Gordon
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    Test image for b&w digital calibration

    Sorry - reading your SUBJECT sheds a little light.

    If this is b/w images done with color printing process, metamerism will constantly plague the viewing experience (the color temp. of the light source being the variable). The only way around it is with a duo/tri/quadtone printing process.

  5. #5

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    Test image for b&w digital calibration

    > They don't supply an ICC profile for their press?

    No, but it was a good hint. I think I found one at their printer's site.

    > If this is b/w images done with color printing process, metamerism will constantly plague the viewing experience (the color temp. of the light source being the variable). The only way around it is with a duo/tri/quadtone printing process.

    I know this will not be a perfect solution, but I have seen an acceptible book from them the Rangefinder folks did.

  6. #6
    Michael E. Gordon
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    Test image for b&w digital calibration

    Ed: I have a book of my own b/w images printed by SharedInk (color process). It is very acceptable, yet green metamerism plagues it under daylight (although most don't really notice). I don't think anyone can help you here but you. Adjust your files until they proof well under your desired light sources, but even then it's still a crapshoot.

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