: Photo in sRGB with black and white parts converted to CMYK I know it's an often topic but haven't found any solution for my problem. I`m working on a book with lamp photos - I was adjusting

@Debbie163

I think you have 2 problems here.


I've printed a proof


What do you mean by proof? If it is just a print in your home printer or office printer, there is no way of knowing if it is calibrated or not. Most likely not, so any grayscale image can potentially look any color.

A proof should be made in a calibrated environment, preferably by the same printer that is going to print your job. They can not guarantee color using a random print taken on another place.



The second one is that if you can not have a neutral gray just saving an RGB image.

If it is going to be printed on a sheeted offset machine, you need to manually separate the plates and assign whatever values you want, in this case, probably k only.

This is accomplished by doing some masking. Keep the color part with the fogra profile conversion, and mask and change values of the background manually.

Be careful because that zone could potentially look artificial.



P.S. White is a color, gray is a color, black is a color. They are not colorless, they are unsaturated.

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@Alves566

So first you didn't make the wall colorless. You made it appear without a color. It still has values in all three RGB channels (as only black is 0,0,0).
You can't easily switch it to only K as it has values that can (and will) be placed in all CMYK channels.

You need to go and redo all photos in either all in CMYK OR separate the lamp and put a K background in InDesign (if they have really one color background it could be easily done with many "white remove" actions).

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