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MartinMM

CMYK values are ignored/converted when using gradient map or a solid color layer in color mode

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Hello,

first of all, i would like to thank you for your great work, i am using Designer since 2019 and Publisher since the Beta came out and both Programs are already very capable and user friendly!

I recently had two commercial projects involving bw images and noticed a strange behaviour: when using a gradient map to unify the tonal values, for example setting a black point at 50-40-50-100, the values seem to get reverted to some internally defined black point 78-68-58-94 in the adjustment layer while the color picker in the image shows 0-0-0-99 at a dark spot of the image, also the exported Pdf shows no cmy values and the files got noticably smaller.

This behavior makes the gradient map pretty useless and unpredictable. When overlaying pictures with a solid color rectangle in color mode the resulting values also seem to fall back to some unpredictable conversion black tone but it doesn't kill the color information. Strangely, when using an hsl layer it works exactly like in PS at 0 saturation: 50-50-50-100 in normal and 34-34-34 100 in color mode, so i ended using this workaround with a selective color adjustment layer above.

The color settings of the images and the Document were eci iso coated v2 300%

thanks and all the best,

 

Martin

clari4.afdesign

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I have the same problem! I want a precise gradient map of two colours with specific CMYK values. I set the exact colours (either by using CMYK sliders or selecting my global swatches), but it keeps returning them to some different values. It seems as if the gradient map tool's only 'language' is RGB and it recalculates all the values you set from CMYK to RGB and then back to CMYK, rendering the job futile. Dear Affinity Team, please fix the gradient map so it works properly. It should be easy to set a gradient map either from a pre-saved global swatch or from specific CMYK or a Pantone.

 

Edited by Jan Osa

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On 12/17/2019 at 6:14 PM, Jan Osa said:

I have the same problem! I want a precise gradient map of two colours with specific CMYK values. I set the exact colours (either by using CMYK sliders or selecting my global swatches), but it keeps returning them to some different values. It seems as if the gradient map tool's only 'language' is RGB and it recalculates all the values you set from CMYK to RGB and then back to CMYK, rendering the job futile. Dear Affinity Team, please fix the gradient map so it works properly. It should be easy to set a gradient map either from a pre-saved global swatch or from specific CMYK or a Pantone.

 

 
Dear Team
Is it correct that the bug has not yet been fixed and that the color values do not remain constant in the gradient-tool?

I currently have this problem with version 1.8.3: i set a gradient with the cmyk controls on an object, copy the object to a new work surface, the cmyk values 
now are different ... please give me info if i am editing something wrong or the bug persists.
Thank you for your response
Vera Zbinden

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sh...

Please, do this quickly...it is very important, when you want reproduced gradiants...i want to change from AI to Affinity with the hole company and we often need gradiants for our work...

Hope a solution comes soon!

Vera Zbinden

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