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Curves adjustment on images in Publisher works opposite to Photo


stoosh

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Hi

I placed an image on a page in Publisher added a curves adjustment layer to it, placed a point in the middle of the diagonal line and raised it upward, the image got darker. Raising the point upwards should lighten the image. Clicking on the Photo icon in Publisher in order to switch to Photo, adding curves does the same thing. However, running photo alone, the curves work correctly.

I am using versions 1.9

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Perhaps your Publisher document is CMYK, and in the Photo application you're working in RGB?

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

    Laptop:  Windows 11 Pro 23H2, 32GB memory, Intel Core i7-10750H @ 2.60GHz, Intel UHD Graphics Comet Lake GT2 and NVIDIA GeForce RTX 3070 Laptop GPU.
    Laptop 2: Windows 11 Pro 24H2,  16GB memory, Snapdragon(R) X Elite - X1E80100 - Qualcomm(R) Oryon(TM) 12 Core CPU 4.01 GHz, Qualcomm(R) Adreno(TM) X1-85 GPU
iPad:  iPad Pro M1, 12.9": iPadOS 17.7, Apple Pencil 2, Magic Keyboard 
Mac:  2023 M2 MacBook Air 15", 16GB memory, macOS Sonoma 14.7

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10 minutes ago, walt.farrell said:

Perhaps your Publisher document is CMYK, and in the Photo application you're working in RGB?

Thanks Walt, you are correct... I'm going to do some research so that I can understand why curves work that way in CMYK.

Much appreciated.

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You're welcome. I seem to recall someone saying something about subtractive color modes (e.g. CMYK) working the opposite way from additive modes (e.g., RGB).

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

    Laptop:  Windows 11 Pro 23H2, 32GB memory, Intel Core i7-10750H @ 2.60GHz, Intel UHD Graphics Comet Lake GT2 and NVIDIA GeForce RTX 3070 Laptop GPU.
    Laptop 2: Windows 11 Pro 24H2,  16GB memory, Snapdragon(R) X Elite - X1E80100 - Qualcomm(R) Oryon(TM) 12 Core CPU 4.01 GHz, Qualcomm(R) Adreno(TM) X1-85 GPU
iPad:  iPad Pro M1, 12.9": iPadOS 17.7, Apple Pencil 2, Magic Keyboard 
Mac:  2023 M2 MacBook Air 15", 16GB memory, macOS Sonoma 14.7

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