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Black & White Adjustment is wrong


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Now and then I am too lazy to convert a coloured image into a "real" greyscale file, so using the Black & White Adjustment in Publisher would be a nice tool. But this Adjustment seems to have severe problems with blue and red. I attached three images to see the effect in a) Publisher and b) the Black & White Adjustment directly used in APhoto.

bw-before.jpg

bw-after.jpg

bw-afphoto.jpg

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Windows 10 | i5-8500 CPU | Intel UHD 630 Graphics | 32 GB RAM | Latest Retail and Beta versions of complete Affinity range installed

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I get identical results in both applications, matching the 3rd image you provided.

Perhaps there's something else in the Publisher document that's causing a problem. Can you share a .afpub file that shows it?

-- Walt
Designer, Photo, and Publisher V1 and V2 at latest retail and beta releases
PC:
    Desktop:  Windows 11 Pro, version 23H2, 64GB memory, AMD Ryzen 9 5900 12-Core @ 3.00 GHz, NVIDIA GeForce RTX 3090 

    Laptop:  Windows 11 Pro, version 23H2, 32GB memory, Intel Core i7-10750H @ 2.60GHz, Intel UHD Graphics Comet Lake GT2 and NVIDIA GeForce RTX 3070 Laptop GPU.
iPad:  iPad Pro M1, 12.9": iPadOS 17.4.1, Apple Pencil 2, Magic Keyboard 
Mac:  2023 M2 MacBook Air 15", 16GB memory, macOS Sonoma 14.4.1

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Call me an idiot ... please! Placed a RGB in a CMYK document. But anyway, this is a big difference from a dark blue to nearly white? Living with my idiocy presented to the public or hiding this thread, thats the question ... :$

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Windows 10 | i5-8500 CPU | Intel UHD 630 Graphics | 32 GB RAM | Latest Retail and Beta versions of complete Affinity range installed

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25 minutes ago, Joachim_L said:

Placed a RGB in a CMYK document.

I didn't even think of that possibility, or I'd have tried it and (probably) spotted the problem :)

-- Walt
Designer, Photo, and Publisher V1 and V2 at latest retail and beta releases
PC:
    Desktop:  Windows 11 Pro, version 23H2, 64GB memory, AMD Ryzen 9 5900 12-Core @ 3.00 GHz, NVIDIA GeForce RTX 3090 

    Laptop:  Windows 11 Pro, version 23H2, 32GB memory, Intel Core i7-10750H @ 2.60GHz, Intel UHD Graphics Comet Lake GT2 and NVIDIA GeForce RTX 3070 Laptop GPU.
iPad:  iPad Pro M1, 12.9": iPadOS 17.4.1, Apple Pencil 2, Magic Keyboard 
Mac:  2023 M2 MacBook Air 15", 16GB memory, macOS Sonoma 14.4.1

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To save time I am currently using an automated AI to reply to some posts on this forum. If any of "my" posts are wrong or appear to be total b*ll*cks they are the ones generated by the AI. If correct they were probably mine. I apologise for any mistakes made by my AI - I'm sure it will improve with time.

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