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Cross Processing Gimp tutorial

The Cross Processing effect affects the colors and the photo gets a lo-fi style.

Italian Web master: Bad English, but good tutorials.

Cross Processing is a technique used in photography. It has been discovered accidentally, by developing a positive film with a chemical solution for negative. Gimpcan be used to get a good cross processing with few steps, and with the help of this tutorial, you will find it very easy. Cross Processing can give interesting results in "street photos".

before/after cross processing effect

I've used an image taken during the Cortina Snowkite Contest, but you can have great results if you shoot in city. If you want to get Cross Processing with Gimp, this is the right tutorial:
As first thing duplicate the background layer (right click - Duplicate layer), if you can't find layers window, try to press Ctrl+L.

fisrt step of cross processing, duplicate background

Select the Background-copy layer, and open curves tool. In this step you will change color curves three times, one for each channel. Each one of the following settings can be changed as you like, these are the settings for my favourite Cross processing effect.
Open Colors - Curves and setup each channel before press OK.

curve setup

The next step in this Cross Processing tutorial for Gimp is to merge down the background copy with Color as blend mode.
Set mode to color, opacity 100%, then Right Click - Merge Down.

merge down layer

Create a new layer (in the layer window, Right click - New Layer then press Ok)

new layer

Select the Bucket Fill Tool, then change Foreground Color as the following one.

add a yellow layer for better cross processing

Select the New layer and click anywhere with Bucket Fill Tool, the layer must be completely yellow, then choose Color as Blend mode, set opacity to 10%, then Right Click - Merge Down.

merge down yellow layer
Continues after the advertising...

Open Colors - Curve and setup a curve like the following one:

curve for good cross processing

Create a new layer (in the layer window, Right click - New Layer then press OK)

new layer

Select the Bucket Fill Tool, then change Foreground Color as the following one.

add blue layer for better cross processing

Select the New layer and click anywhere with Bucket Fill Tool, the layer must be completely blue, then choose Overlay as Blend mode, set opacity to 10%, then Right Click - Merge Down.

last step of cross processing with gimp, blue overlay level

Now the cross effect is finished, If you want you can add an HSV Noise (Filters - HSV noise).
If you like this effect you can also be interested in Two-Strip Technicolor effect for Gimp.

before/after cross processing effect
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Use of these tutorials, for non commercial purposes, is allowed only if you put a link to the homepage of this website.