Photoshop 2022: Gradient map and CMYK color

[jakubk83931695]

When using the adjustment layer in CMYK mode, map 100% K to 0% K, I get output in all CMYK colors - useless!
When I import a Grayscale file into a CMYK canvas (as a smart object), it is also converted to all CMYK colors. I'm sorry but this doesn't strike me as a bug, but as a fundamental flaw and misalignment.

[AKS666]

I also experienced this today, this is really REALLY bad!

Please fix this ASAP, thanks.

[NB, colourmanagement net]

jakubk83931695, Please describe the steps you are taking - one at a time. 

i.e.: how do you create the image?

what do you mean by "using the adjustment layer in CMYK mode"

- which specific adjustment layer are you referring to?

also you mention "output in all CMYK colors"

what do you mean by output?

do you mean that the file you have open now has colour in all channels?

In CMYK print (depending on the ICC profile) even neutral black is created using a mix of CMY aswell as K [it's known as "rich black"] so that means converting a greyscale image to CMYK will result in a mix of colour. You'd have to delete the CMY channels to get an image file with just K.

I hope this helps
neil barstow, colourmanagement net :: adobe forum volunteer
google me "neil barstow colourmanagement" for lots of free articles on colour management
[please only use the blue reply button at the top of the page, this maintains the original thread title and chronological order of posts]

[AKS666]

Ah what? ^^

Gradient layer effect on a layer is set to ONLY K but now it is processed in CMYK in Photoshop.

This even happens to older fotos with this adjustment opened in Photoshop 23.

[D Fosse]

I would assume gradient map is basically an RGB function operating on RGB numbers.

In other words, any CMYK numbers are translated via working RGB, and then the returning CMYK output is always 4 plate.

Yes, I can see that a K-only gradient makes sense. Post it under "ideas" (aka feature request).

[jakubk83931695]

I couldn't agree more - in the previous version it worked exactly as one would expect - when in CMYK, the gradient was in the chosen colour. In addition, adjustments that require RGB are unavailable in CMYK mode.

[D Fosse]

OK. If it worked previously, then it's "bugs", not "ideas".

[jakubk83931695]

1) Otevřete jakýkoli starý soubor .jpg v RGB (neotevírám upravený soubor - pro jistotu).
2) úpravy / převést do profilu: CMYK Fogra 39 - nyní jsem v CMYK barve módu.
3) adjustment layer - gradient map - levý (tma) bod 0;0;0;100, pravý (světla) 0;0;0;5 (CMYK)

A teď bych měl mít šedou 0;0;0;40 (Photoshop 2021), ale mám 40;32;31;10 (Photoshop 2022). I know about "rich black" ale když chci černou, tak chci jenom černou.
Používám tento postup pro specifickou úpravu WB fotek do knih - ostatní CMY barvy přidávám následně ale pouze do stínů.

Adobe: Please fix this ASAP, thanks!

[jakubk83931695]

I´m sorry, I paste wrong text 🙂

1) Open any old .jpg file in RGB (I don't open a modified file - just to be sure).
2) Edit/convert to profile: CMYK Fogra 39 - I am now in CMYK color mode.
3) adjustment layer - gradient map - left (dark) point 0;0;0;100, right (light) 0;0;0;5 (CMYK)

And now I should have a grey 0;0;0;40 (Photoshop 2021), but I have 40;32;31;10 (Photoshop 2022). I know about "rich black" but if I want black, I only want black.
I use this for specific editing of WB photos for books - I add other CMY colors afterwards but only for shadows.

Adobe: Please fix this ASAP, thanks!

Translated with www.DeepL.com/Translator (free version)

[AKS666]

It's not only Gradient Map but Gradient layer effects have the same issue...

[J453 · Accepted solution]

Update to 23.0.1. Gradient Fills and Gradient Maps created in prior versions will look the same when opened in 23.0.1.

[solar21]

This is new feature Method: Perseptual/Linear/Classic. It appears in Gradient and Gradient Map.

https://www.youtube.com/watch?v=enLk_6wtaUY

Change Method to Classic and it'll work as previous. In the begining of polish version of new Photoshop there was a bug and there was no possibility to change Method, but now it's OK. Almost OK because Photoshop doesn't remember this setting in Gradient Map and Perceptual is always default selection. Gradient Tool remembers last selection and you can set default to Classic.

[uenKerwin]

Just change the Method to Classic. 

[Micah Beard]

Thank you!!!!!

[AKS666]

And still this has to be done in photoshop 24.1...

Is this ever going to be fixed?

[Kazem Rahimi]

I have the same problem.

in Photoshop 2024 , gradient map do not working prperly on the CMYK files.

for example : setting gradient from  c:0  M:0  Y:0  k:100   black to   white , dot work properly.

it is a very big bug in my oppinion.

[Kazem Rahimi]

  Changing ''Method'' in the dialogue box fixes the problem.