When switching to B&W the picture is not entirely B&W

[Xyzzy]

When I switch to monochrome in Lightroom Classic, by chosing the black and and white option and then profile: Adobe Monochrom, the pictures still have a touch of color? I first thought it was something with the screen on my Mac, but when I export the pictures they have different touches of color. How to get real B&W already in Lightroom? Is this a bug or should I change something to see B&W?

Thanks / Hans, Sweden

[Rikk Flohr: Photography]

Sources of Color from an image converted to BW can come from:

• Tints applied via Local Adjustment Tools
• Color Grading

You will need to check brushes/gradients for a color swatch being applied

And/Or check the Color Grading Panel.

Toggling the on/off switch for either can reveal where the color lies. 

[Xyzzy]

Thanks for the reply, Rikk.

I now reinstalled Lightroom and when I do exactly the same adjustments on a virtual copy of the picture with the color tint, the tint does not appear on the copy. The original picture in Lightroom has still got the tint, even if I switch to Color and then back. I don't know what was the problem. No Color Grading or adjustment that could affect the color of the B&W picture have been made on the original or the virtual copy. So now it seem to work.

/Hans

[SeanMcCormack]

You can also get colour on B&W photos if one of the R, G or B curves have changes. 

[Xyzzy]

Ah, that might be the reason. Strange that I haven't seen it before. Thanks.