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Cross Processing Technique (contains images)

Discussion in 'Image Processing' started by Luckypenguin, Sep 26, 2011.

  1. In the process of attempting the discover all the ins and outs of Nik Color Efex Pro 3, I've recently been exploring the cross processing options. The term cross processing comes from the days of film where a film was processed in a chemical solution not designed for that particular film. This results in colour shifts which (depending on your tastes) can give a cool colour tint to an image.

    Color Efex has 19 different cross processing filters to make things easy, but out of curiousity I wanted to figure out a way to do it manually. This can be done in image editing software that allows you to individually adjust the curves for the three primary red, green, and blue channels. There are many different effects you can achieve with cross processing, but to demonstrate the process I've tried to create a look similar to the "L05" filter in Color Efex.

    The process was as follows:

    Red Channel

    cp1.



    Blue Channel

    cp2.



    Green Channel

    cp3.



    Adding a yellow tint. I've applied the tint to the shadows, midtones, and highlights

    cp4.



    Adjusting the full RGB curve to brighten the highlights

    cp5.



    The colour balance is not yet to my liking, so I've added some more red...

    cp6.



    ...and taken out some green

    cp7.



    With a little bit of perspective correction as well, this is the original...

    OEP1-P7092931-P3R.



    ...and this is the finished product.

    OEP1-P7092931-P2R.



    Whether you find this as an improvement comes down to a matter of taste, but I think it gives a unique look to the image. Now I'm far too lazy to do this manually every time, so here are some more images that have used the cross processing filters in Color Efex Pro.

    The first is the same image as above but processed to give a slightly different look

    6174482219_3a0f16b269_b.
    Olympus E-P1


    6169115674_fa547731cd_b.
    Panasonic GH1


    6165769879_109e063f30_b.
    Panasonic GH1


    6161693872_f6d63b286b_b.
    Panasonic GH1


    6165770583_912cf3b4b1_b.
    Panasonic GH1


    6178188116_f50dfabe55_b.
    Olympus E-P1


    6158317607_c581598bb4_b.
    Canon 50D


    6169069566_c92c4ff3c9_b.
    Canon 50D


    6181261816_b3e3e99540_b.
    Canon 50D



    Canon 350D
     
    • Like Like x 4
  2. Alanroseman

    Alanroseman Super Moderator Emeritus

    Dec 21, 2010
    New England
    Hi Nic,

    Nice post, very interesting look at the cross processing technique.
    Good stuff!

    Cheers, Alan
     
  3. linkedit

    linkedit Mu-43 Top Veteran

    649
    Aug 6, 2010
    New Jersey, USA
    Now where nearly as good as with film but not too bad. I'll have to play around with this tonight.