Recreate a cross process in digital.

I was reading that recently it is possible to handle color curves with Picnik, although only for paid users. I went to test it and the first thing that occurred to me was to make a cross process to one of my photos, and I realized that in Engadget Foto we have not yet spoken about it. What is a cross process?

In analog photography, When a color negative is developed, a chemical process called C-41 must be followed, and when a slide is developed it is done according to the C-6 E-6. Well, I don’t know if it was someone who got confused or someone very creative who went through these processes. For a color negative a slide used the development process intended for a slide a negative and the results were more than impressive. Contrast increases, shadows turn bluish, light skies turn yellowish, and grain increases.


Recreate a cross process in digital

The reverse process can also be done. But the most used cross process is the result of “confusing” the C-41 as the E-6, or reveal a negative with the chemical process of a slide or reveal a slide with the chemical process of a negative. I’m going to show you how to bring this process to our digital photos with Photoshop. You can also try it with any other program that allows you to handle curves by colors, such as GIMP, or Picnik.

The effect is more noticeable when we do it with photographs where the shadows have detail or are not too plastered, and if it is a little overexposed all the better. I’m going to use the following as a sample:

Recreate a cross process in digital

1. We open the photograph. We create a new curve adjustment layer.
Layer> New Adjustment Layer> Curves

two. We select the red channel and take the top end of the curve a little to the left, then we create two points on the curve to give it an S shape, as we see:

Recreate a cross process in digital

3. Now we do it with the green channel, and we describe an S to give more contrast, with special pronunciation in the high lights:

Four. And with the blue channel we play with the highest and lowest part of the curve. We move the end of the lights down, and the end of the shadows up:

Recreate a cross process in digital

5. We leave the RGB curve untouched in this layer and press accept.

6. To this layer of curves that we have just created we change the fusion mode by way Colour. Since what we are looking for is to preserve the luminosity of the original photo, and the contrasts that we have made with the color curves only affect the colors of the photo.

7. If what we are looking for is a more contrasting light, we create a new curve adjustment layer and describe an S with the RGB curve.

Recreate a cross process in digital

And we change the blending mode to Luminosity.

8. Finally we are going to create a new solid color fill layer, and we choose a color between yellow and green. We lower the opacity to 10%.
Layer> New Fill Layer> Solid Color

It’s over, we already have our cross-processed photography.

Recreate a cross process in digital

There are many ways to imitate the cross process in digital, but this is the one that has convinced me the most, especially because of its simplicity. You can also try to give it more contrast, add noise, or oversaturate them to bring the results even closer to those of an analog photograph. Feel free to move the curves as you wish and achieve other results.

More information | Wikipedia