Black generation setting - colour profile

[RobLon]

Hi everyone, I'm an Italian illustrator and I have a question about color settings. Where can I adjust the black generation in Affinity Photo?
I know that in photoshop it is located in> color settings> work space> CMYK> Custom where you can customize the generation of black in light, medium, strong and none. Do you know where I can find the same type of setting in Affinity Photo?
Is there a way to create a personal color profile where black generation is none?
Thank you all for the precious support you offer, dedicating your time. Sorry for my English. I use google translate. I hope you will forgive me.
Roberta

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[RobLon]

Hi Lagarto thanks for your reply. I suspected it but wasn't sure.
I know that 'None' in black generation is a setting that is not used in the photographic field . But for some illustrations it is sometimes necessary to set 'none' in the black generation because in the conversion from rgb to cmyk you may not want anything on the black channel.

Thanks so much for your support.😊

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[RobLon]

Hi Lagarto thanks for your reply. I hope I understood.
If I understand correctly you have created a new profile with custom black generation and then you have imported it into Affinity, correct? Or have you managed to edit an existing one in Affinity?

My aim is related to production of illustrations. I give an example.
I have a line-only drawing that I scanned. The drawing was scanned in grayscale. I need to convert to cmyk to color it. I may find myself having to choose in case A or in case B.

Case A: I want the line not to contain black in the black channel, only cmy> I customize black generation in 'none'. When I convert from grayscale to cmyk I have the black channel empty.

Case B: I want the line to be composed only of black, and nothing in cmy> I customize the generation of black in 'maximum'. When I convert from grayscale to cmyk I will have my line only in the black channel already at the correct intensity and the cmy channels are empty.

Both are correct as it depends on what I want to achieve.

When I want to work without black I need 'none' black generation because otherwise some processes would automatically add black that I don't want (filters, color wheel etc).

I could adjust my illustration later with curves, but the result would change from what I had set and it is not possible to have control (it is very difficult to explain this).

The speech is different when working with photos because a little black is right to give depth and make the photo better. The amount of black is also very important in a photo because it can make the result better or worse. It is always interesting to experiment with various types of customization because one result can be better than others. It really depends on the photo.

With curves it is impossible to compensate for the absence of black, in the sense that the result will never be the same as the photo that contains black, because the "black" composed of cmy100 is different from the k100. But if you deliberately choose not to want black in the channel it is because you want to have something 'different' specifically for your purposes. In publishing, the choice k none is wrong. In the artistic field, everything is allowed as long as there is a purpose and an intent.

This is according to my personal experience with illustrations. My experience with photos is limited and unprofessional.

For my needs it is very important to have the black control during the profile conversion phase

 

Sorry if I've written a lot
Thank you for your support

 

Thank for image very interesting and demonstrative 👍

Edited February 10, 2021 by RobLon

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[RobLon]

3 hours ago, Lagarto said:

I was curious to find out whether you can manage with a set of existing profiles (created e.g. in Photoshop) and then use them in Affinity Photo, and make minor adjustments manually by using curves, or whether you need to create CSS based curves for individual cases so that you basically continue to have a tool like Photoshop also in the future (since e.g. Affinity apps cannot create them).

I have the same question too. I'm newbie with Affinity

@Lagarto

I did some test. I hope I did it right. You can create several new blank documents, each with a different profile from photoshop, as if they are templates/model, and paste in the image you are interested in. I have tried and it works. Important: the 'Convert open files to workspace' function in preferences must be disabled

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[RobLon]

On 2/10/2021 at 1:41 PM, Lagarto said:

Created in Photoshop, saved from there and then used that profile when converting to CMYK.

Thanks Lagarto! I understand where I was wrong now! I saved in .csf instead of .icc. 😅

Thanks a lot for your help!

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