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Thread: Brightness vs. Exposure

  1. #41
    kris's Avatar
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    Nov 2011
    Location
    Rome, Italy
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    Real Name
    Andrea

    Re: Brightness vs. Exposure

    In previous version of LR and ACR the exposure and brightness sliders actually did a similar, and overlapping, job. In the new 2012 process the brightness slider has been removed. For comparison the basic sliders are

    LR4/ACR7, using the new 2012 process:
    Exposure
    Contrast
    Highlights
    Shadows
    Whites
    Blacks

    LR3/ACR6, and previous using process 2003 or 2010:
    Exposure
    Recovery
    Fill Light
    Blacks
    Brightness
    Contrast


    LR4/ACR7 handle the previous processes, so if a file processed with LR3/ACR6 is opened with LR4/ACR7 you will see the LR3/ACR6 sliders.

    Andrea
    Last edited by kris; 16th February 2013 at 04:34 PM.

  2. #42
    xpatUSA's Avatar
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    Feb 2012
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    Texas
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    Real Name
    Ted

    Re: Brightness vs. Exposure

    Quote Originally Posted by Colin Southern View Post

    "Exposure shifts all levels. In fact it scales all levels by a constant multiplying factor."

    Hmm - seems pretty close to "Exposure shifts the values for the entire image up or down"
    It is not "pretty close" at all: changing the gain of a transfer characterist is completely different to changing it's zero point (offset).

    _GUI_'s explanation was accurate, clear, to the point, and needed no further comment, IMHO.

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