What is cross processing?

[kenwood]

In the world of retouching, what does cross processing mean? I notice that some people on flicker tag their image with this key word but not sure what it means. Any help is appreciated.

example: http://www.flickr.com/photos/wasspho...ossprocessing/

[pixelzombie]

this maybe:

http://en.wikipedia.org/wiki/Cross_processing

[Sweetlight]

In the "good ole' days" of film we of course shot color negative (C-41 Processing) and color slide (E-6 Processing). Cross processing is the method of running the film through the oppossitte process, ie; your E-6 through the C-41 and/or your C-41 through the slide film processor.
The effects you achieved by doing this were surreal and you could often end up with a really nice shot for your portfolio but it was highly unpredictable and it took a person quite a bit of time to gather enough info so they could make proper exposures and process for the correct amount of time. You can use Photoshop to achieve similar results.
I hope this helps and feel free to email me with questions.

Chris