Search results

  1. mihas

    SCTV and other Perceptual Uniformity TV online calculator (free)

    In free access online-calculations of Spot Colour Tone Value (SCTV) by ISO 20654:2017 can be done at: Perceptual Uniformity Tone Value calc • SCTV & CIE ΔE Just copy the table with the Lab data by patterned and click "Calc". Input data format: Tone Value, Lab_L, Lab_a, Lab_b (split by tabs or...
  2. mihas

    SCTV formula in excel

    Ideal SCTV Linear Result in TVI coordinates
  3. mihas

    SCTV formula in excel

    SCTV calculations in Excel were published here: SCTV_calc_from_cielab.xyz.xls In this example are CGATS data samples with 4 midtones. Change XYZ samples and tone values to any.
  4. mihas

    Decompiling an ICC profile to see the lookups?

    Spectralcalc decompil the profiles without "targ" signature.
  5. mihas

    Dot gain table...

    If you need tone response curves from any Fogra-ECI profoles - paste icc-profile here https://cielab.xyz/spectralcalc_en.php and click TVI-button: there will be both a graph and a table from profile.
  6. mihas

    Dot gain table...

    Hi! Here https://cielab.xyz/TVI.php any discreteness and standard 2004 or 2013 curves. The space between curves is also described.
  7. mihas

    Software for evaluating spot colors

    Here freeware shareable report, spectral reference and sample is possible, all languages from Google. Report example...
  8. mihas

    Which model is right when considering Color Gamut ?

    Here you can see CIE Lab Gamut (HVS, Human Visual Space) in 2D or 3D, and printing gamut inside HVS: http://rudtp.pp.ru/spectralcalc_en.php Green border - so it looks like a horse shoe (xy locus) in the CIE Lab:
  9. mihas

    color balance in the pressroom

    I chose a lamps to my prepress and to my printing house by CRI and CQS (Color Rendering Index, Ra, Ra14, Ra15; Color Quality Scale (NIST), Qa, Qf, Qp, Qd-GAI). Ideal reference for daylight is all indexes CRI=100% and all indexes CQS=100%. If all indexes CRI>95 and CQS>95 - lamps suitable for...
  10. mihas

    Paper White M1 and M0 Differences

    Thank you Gordo. It seems that GRACoL 2013 did as ISO 12647-2:2013 (or vice-versa) - coated paper b=-4 with M1. FOGRA 51 made otherwise: b=-4 with M0 and b=-6 with M1.
  11. mihas

    Paper White M1 and M0 Differences

    Before I forget. Paper White M1 and M0 Difference = 0 if fluorescence component of paper = 0.
  12. mihas

    Paper White M1 and M0 Differences

    I think yes. It is better than use appropriate datasets: instrument M0 and dataset M1 or vice versa.
  13. mihas

    Paper White M1 and M0 Differences

    Yes. Or you can find the quote, as an example lesson here: http://rudtp.pp.ru/pdf/Brightness_Wh...resc_comp.xlsx I disappoint spectrophotometers sellers, but M1 to Mo and M0 to M1 conversion of colorimetric Characterization Data (reference or sample) is possible. Here are some ways to...
  14. mihas

    Paper White M1 and M0 Differences

    ∆b* really can not tell the difference. Papers cited in the examples contain diverse fluorescent components. ∆b* ignores that.
  15. mihas

    Paper White M1 and M0 Differences

    Predict the difference between M0 and M1 allows a ratio CIE Whiteness to CIE Lightness. Calculation of CIE Whiteness just enough based on the difference betwen UV-included and UV-excluded. Manufacturers of paper indicate CIE Whiteness. Also ISO 11475 allows you to calculate fluorescence...
  16. mihas

    Paper White M1 and M0 Differences

    I confirm. Profiles Fogra51 beta were made with M0 and M1 filter. The difference in b* is equal to 2 on paper. I have also a i1 Pro2 spectrophotometer measurements of the same sample of different filters. The higher CIE whiteness (fluorescence, delta D65 Brightness UV/UVex) - the greater the...
  17. mihas

    software for building dot gain curves?

    Grigori and Andrey responded and helped with translation, Alexander not responded. So except me helped three Russian speakers. All are encouraged to refer to native English speakers for help. All errors that they found I corrected. I do not cease to hope for help in this forum. English version...
  18. mihas

    software for building dot gain curves?

    None of them is a native English speaker, but thanks! Now I will write them.
  19. mihas

    software for building dot gain curves?

    Film does not matter. It is important that the difference Print characterisnic curve (reference) minus Print characterisnic curve (sample) is not equal to the difference Plate characteristic curve (reference) minus Plate characteristic curve (sample).
  20. mihas

    software for building dot gain curves?

    Yes, automatically. Only one iteration! Two iteration maximum in MetaDimension only and the second badly. While the point administration allows a lot of iterations, mathematically perfect. The difference between the independent calculation of the size of the point, and automatically in the RIP...

So You Want to Invest In Inkjet

I Want to Invest in Inkjet, But…
Over the past few years I’ve watched a group of transactional and direct mail printers strategically shift from monochrome toner machines to full-color toner and inkjet presses. Most banished old black-only toner boxes but kept their color toner devices around because they anticipated needing both color inkjet and toner presses to meet customer needs. They were right then and continue to be right today. Because toner and inkjet can be better together. Read the Post

 
Top