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Thread: removing colour casts simply

  1. #1
    Who me? dbax's Avatar
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    removing colour casts simply

    Hi all,
    Just had to remove a yellow cast from a photo. I find this method easier than using the colour balance, and it seems to work on any colour.

    In CS3 or any version(that has layers and blending modes) as far as I know.

    Duplicate layer
    Apply Blur>Average
    Change blending mode to soft light.

    EDIT- CORRECT STEP ARE: (see Dbax post below - **RICK**)
    Duplicate layer
    Apply Blur>Average
    Ivert( image>adjustments>invert)
    Change blending mode to soft light.

    simple as that,can be made into an action so its a one click fix

    Thought I'd share it and ask for feed back
    David
    Cheers David.

    Canon 40D/EF-S 17-85 mm IS/Kenko Extenson Tubes/Canon EF 50mm F/1.8 II (nifty fifty)
    Sigma 10-20mm 4-5.6 /Sigma 70-200/ Sigma 1.4 teleconverter/ some Conkin filters | Adobe Photoshop CS6



  2. #2
    are you serious? Shelley's Avatar
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    thanks - i always check the hints and tips......
    Shelley
    (constructive criticism welcome)

    www.shelleypearsonphotography.com


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    Antipod
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    I don't want to sound pedantic, but I couldn't understand why it would work so I tried it - and indeed, it didn't remove any color cast. Soft light blending just increase tonal range AFAIK - whatever is dark in the image gets darker and whatever is light gets lighter. It's a solution to repair washed out foto's but if I understand correctly it doesn't change color.

    Can you show us an example of where it works?
    Ciao, Joost

    All feedback is highly appreciated!

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    Quote Originally Posted by dbax View Post
    Hi all,
    Just had to remove a yellow cast from a photo. I find this method easier than using the colour balance, and it seems to work on any colour.

    In CS3 or any version(that has layers and blending modes) as far as I know.

    Duplicate layer
    Apply Blur>Average
    Change blending mode to soft light.

    simple as that,can be made into an action so its a one click fix

    Thought I'd share it and ask for feed back
    David
    Hi Jev,
    damit of cause it works if I'd included all the steps, some body kick me please

    Duplicate layer
    Apply Blur>Average
    Ivert( image>adjustments>invert)
    Change blending mode to soft light.

    If one of the mods is able to correct my mistake I'd appreciate it, don't mean to give incorrect information. Sorry
    Heres the image I corrected yesterday
    Attached Images Attached Images

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    Consider yourself kicked

    Works a treat much easier than trying to find a 'colour neutral' spot to use.

    Have a couple on me

    Cheers David
    c&c always welcome, both good and bad, provided it is constructive.
    Feel free to edit my images (hopefully for the better).
    Nikon D40x, SB600, 18~55 & 55~200 kit lenses, Sigma 105 Macro and an understanding wife

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    Member matilda's Avatar
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    I'll have to try this one out. thanks.

  7. #7
    can't remember
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    I'm still scratching my head over this one. Where's the downside? There has to be a downside doesn't there? Otherwise we'd all have been doing this long since. Still puzzled.

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    In Training MarkChap's Avatar
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    I see the results, but still can't quite grasp the concept

    Just add some blue and hey presto ??

    Got a heap of old slides that have been scanned that could do with this
    Smoke Alarms Save Lives, Install One Today
    I shoot Canon
    Cheers, Mark


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    I have a few images with a heavy blue tint (wrong temp setting when taken) and this worked on them
    So it seems to be the inverting that does the trick.
    As I shoot in raw the colour temp can be altered when converting, but still a nice trick to keep up my sleeve for when a colour cast is created during processing or its a light tint and I don't notice it while converting

    Cheers David

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    Bird Nerd Richard Hall's Avatar
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    I haven't tried this out yet, and judging by the comments it seems to work, BUT, isn't the easiest way to just use curves? Surely it's less steps and gives you finer control on the amount and colour to be removed?
    www.richardhallphotography.com


    Atheism is Myth-understood

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    Quote Originally Posted by Tannin View Post
    I'm still scratching my head over this one. Where's the downside? There has to be a downside doesn't there? Otherwise we'd all have been doing this long since. Still puzzled.
    I've been using this for almost 2 years now and had very few that it hasn't worked for. Don't know how or why but its a gem to have as a back up

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    Way Down Yonder in the Paw Paw Patch jim's Avatar
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    My attempt to do this (in CS2) seemed to work, though at the expense of noticeable lightning and desaturation of the image. Perhaps I'm cocking it up? I have unlimited capability to do that.
    All constructive criticism accepted with gratitude.


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    can't remember
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    Rich, anyone who can use "curves" and "easiest" in the same sentence needs to get out more!

    Most people struggle with the Photoshop curves control for a long, long time, and many never master it. (I certainly wouldn't claim to be a master of it myself, far from it.) Most people, unless I miss my guess, are prepared to go a long way out of their way to avoid the curves command. As witnesses, call the many, many "how to use curves" tutorials out there, the large number of plug-ins that provide a more intuitive interface to achieve the same things, and even (late to the party, but better late than never) Adobe themselves, who have substituted a much more usable and apparently popular control in Lightroom, which has been a great success.

    (Reminder to self: have a look at CS4 in case they have ported some of the Lightroom functionality over to Photoshop.)

    (Sorry, I'm off-topic.)

    (As usual.)

  14. #14
    Bird Nerd Richard Hall's Avatar
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    Quote Originally Posted by Tannin View Post
    Rich, anyone who can use "curves" and "easiest" in the same sentence needs to get out more!

    Most people struggle with the Photoshop curves control for a long, long time, and many never master it. (I certainly wouldn't claim to be a master of it myself, far from it.) Most people, unless I miss my guess, are prepared to go a long way out of their way to avoid the curves command. As witnesses, call the many, many "how to use curves" tutorials out there, the large number of plug-ins that provide a more intuitive interface to achieve the same things, and even (late to the party, but better late than never) Adobe themselves, who have substituted a much more usable and apparently popular control in Lightroom, which has been a great success.

    (Reminder to self: have a look at CS4 in case they have ported some of the Lightroom functionality over to Photoshop.)

    (Sorry, I'm off-topic.)

    (As usual.)
    Well, each to their own Tony. I find curves a pretty straight-forward tool for reducing colour casts. Perhaps I'm just unusually skilled and talented? Oh wait, no doubt about it, I AM unusually talented.

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    This seems to work quite well. Thank you mate
    Michael.

    Camera: Canon EOS 400D w/ Battery Grip (BG-E3)
    Lenses: Sigma 10-20, Sigma 24-70, Canon 50 f/1.8 & Sigma 70-200
    Software: Adobe Photoshop Lightroom 1.4 and Photoshop CS3
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