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Thread: Black photo after conversion to LAB-mode

  1. #1
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    Black photo after conversion to LAB-mode

    Scott Kelby suggests a method of sharpening where conversion into LAB-mode is necessary. Whatever the original mode (CR2, RGB, TIFF or PSD) the photo turns completely black. The L, a and b channels are there (though every one is black) and the info palet shows the L, a and b values in the photo. There is light underneath the black.
    Anyone?

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    Re: Black photo after conversion to LAB-mode

    I use LAB colour a lot, and don't have the issue that you mention (in fact, it works like a charm).

    At what point does it go black? What profile is the image tagged with?

    Usually I'd set the mode to 16 bit - colour to LAB - click on channels - click on "L" - and then use a USM.

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    Re: Black photo after conversion to LAB-mode

    Yes, that's what should happen, as it always used to.
    But now it's all blackness I see immediately after the conversion.
    It doesn't matter from what mode I convert, whether it's CR2, TIFF, jpg or PSD.
    The color profile is Adobe98.

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    Re: Black photo after conversion to LAB-mode

    Not been a software update (that has broken it), has there?

    Worth a google (with the software name)?

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    Re: Black photo after conversion to LAB-mode

    The problem is solved though I don't know how.
    It had something to do with "color range".

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    Re: Black photo after conversion to LAB-mode

    Quote Originally Posted by swdick View Post
    The problem is solved though I don't know how.
    It had something to do with "color range".
    Strange one - oh well, at least you got it sorted

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