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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


    Blue Channel


    Green Channel


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


    Adjusting the full RGB curve to brighten the highlights


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


    ...and taken out some green


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


    ...and this is the finished product.


    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

    Olympus E-P1

    Panasonic GH1

    Panasonic GH1

    Panasonic GH1

    Panasonic GH1

    Olympus E-P1

    Canon 50D

    Canon 50D

    Canon 50D

    View attachment 177262
    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

    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.
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