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Thomas Brigantino made a really useful video on dealing with color casts

Discussion in 'Image Processing' started by addieleman, Apr 15, 2016.

  1. addieleman

    addieleman Passionate amateur

    Nov 13, 2012
    Netherlands
    Ad Dieleman


    It took me more than an hour to figure out what the heck he was doing, but I persisted because I felt this could be a very important tool to master. I used his method on the following picture which I didn't get to my liking color-wise.

    i-6dSQdQn-X3.

    I used the method of the video followed by a Brightness/Contrast layer and a warming Photo Filter layer where some light signs are masked out to retain their real color. I'm not sure I'm there yet but it looks promising. Thomas showed it for interiors where you often get different color temperatures and casts in shadows/midtones/highlights and I'm sure it'll work very well there.

    i-2PSdSmR-X3.
     
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  2. NickCyprus

    NickCyprus Super Moderator

    Oct 11, 2012
    Cyprus
    Nick
    Another great photo Ad and very informative link!
    Although to be honest, I like both versions :)
     
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    • Agree Agree x 1
  3. dbmiller

    dbmiller TalkEmount Top Veteran

    777
    Mar 2, 2012
    New England
    I can definitely see where it feels like too much blue in the blue hour photo, and none in the latter - I wonder what the latter would look like with a cooling filter applied.

    Took me a bit to figure out what he was doing as well. I think you could do it all in one curves layer, but separating in out makes it a little easier to understand the pieces. Which if I understand the video, is...
    • Light sources from different sources may cause different color casts in the image, not easily fixed by a "simple" white balance.
    • When using the eye-dropper tool in the curves layer, be careful not to pick a blown out pixel as your black or white value.
    • The trick of using a grey-filled layer to find the 50% gray area was pretty neat.
     
  4. robbie36

    robbie36 TalkEmount Veteran

    484
    Nov 21, 2014
    I know this guy pretty well because he does a lot of tutorials on Lumenzia (luminosity masks) which I use a lot.

    However although he really knows his stuff, his videos are seriously over long.

    Still he does get a triple word score for using a 'threshold adjustment layer' in Photoshop during a tutorial.

    And with that here is one I did earlier...

    EF6.
     
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  5. addieleman

    addieleman Passionate amateur

    Nov 13, 2012
    Netherlands
    Ad Dieleman
    Surely agree on that one. I once commented on irrelevant chit-chat in a video and he replied that he left the dry and boring tutorials to others.