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Thread: Q: Colour Settings for AP Competions

  1. #1
    Ausphotography Regular
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    Q: Colour Settings for AP Competions

    Hi there,

    I'm wanting to enter one of the comps and have the colour just right (srgb) on CS5 however when I load my image and preview it in Firefox (latest v) the colour is horrible. I think i have been through this before and have to make adjustments.

    Can anyone advise on the required setting for the AP Comp colour space (srgb I think) and how to check my firefox colour space is right and anything else I need to know?

    Thanks,

    Wayne.
    "Nature photography is about choosing a location, crawling through dirt, being bitten by insects and occasionally taking a great image". - Wayne Eddy.

    Canon 5D MkIII, Canon 7D, 17-40mm f/4L,
    24-105mm f/4L
    + Canon 70-200mm f/2.8L IS +400mm f/5.6L + Canon 1.4xTC + Canon 100 EF f2.8 USM + 430-EX


  2. #2
    Administrator ricktas's Avatar
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    The comps are sRGB.

    What version of FF, cause some of the recent version had the colourspace option turned off by default:

    Warning: Do this at your own risk


    FireFox 3.

    Type about:config in the address bar.
    Click the I'll be careful button.
    Type color_management in the filter field.
    double click the gfx.color_management.enabled field to set it to true.

    If using FF4 or above, google FF4 color management and you will find lots of people with issues regarding it, but not really much in the way of a solution.
    Mozilla seems to just direct people to read THIS and THIS re the issues

    EDIT : reading about this more, we should be setting the field to 1, to have it work in FF4 and above. (this is my understanding and do at your own risk)
    Last edited by ricktas; 29-07-2011 at 12:38pm.
    "It is one thing to make a picture of what a person looks like, it is another thing to make a portrait of who they are" - Paul Caponigro

    Constructive Critique of my photographs is always appreciated
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    RICK
    My Photography

  3. #3
    Ausphotography Regular
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    Addition: my monitor is calibrated with a Spyder 2

    I don't have gfx.color_management.enabled available, only these:

    gfx.color_management.display_profile
    gfx.color_management.mode
    gfx.color_management.rendering_intent

  4. #4
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    I'm running FF5

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    Administrator ricktas's Avatar
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    From my understanding from the links above, you need to set this: gfx.color_management.mode to be set at 1

    Quoted from the second link:

    Color correction can be controlled by setting the value of the gfx.color_management.mode preference, as follows:
    Value Description
    0 Color management disabled. (Default in Firefox 3.)
    1 Full color management.
    2 Color management applied only to tagged images. (Default in Firefox 3.5.)
    Last edited by ricktas; 29-07-2011 at 12:41pm.

  6. #6
    It's all about the Light!
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    To be more technically pedantic... The competition strips all EXIF information and leaves a default JPEG which is taken to be sRGB.

    So for correct rendering by any browser the competition entry must be saved as sRGB.
    If you save an any other colour space (AdobeRGB as an example) it will render incorrectly.

    You can test this by uploading to the comp system, then reviewing the result, then clicking Cancel so the image is not entered.
    regards, Kym Gallery Honest & Direct Constructive Critique Appreciated! ©
    Digital & film, Bits of glass covering 10mm to 500mm, and other stuff



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