In the good old days of film, black and white negatives, colour negatives and transparency films all had particular processing techniques which used specific chemicals and methods to produce the image. Popular colour negative process was called C41, and trannies from E6 were also common.
But what happened if you accidentally put a film needing C41 chemicals through the E6 process, or vice versa? The answer: weird things. Colours would shift and give an eery effect.
Of course, in the days of digital, nobody needs to do this any more, but plenty of people like to – by faking the same colour shifts as before, but this time in the digital darkroom.
There were several different options to try, so this is what I compared:
Actions are a powerful way to get Photoshop to do some pretty whacky things – and in a reproducible manner. This kind of effect won’t suit every picture, and I find using it sparingly is the best way. Otherwise, your images can end up looking very similar. But if you want to produce a series of pictures all with the same look, Actions are a very reliable way of doing so.