The term "infrared" literally means "below red", and without getting into science or color theory, that means we as human beings can't see it. Yet even though you and I can't see infrared light, most digital cameras can, and with the use of an infrared lens filter, infrared photography can bring that light within our visible range, capturing and creating images that have a truly unique, mysterious and otherworldly look to them. Fortunately, this same look can be created quite easily in Photoshop, as we'll see in this tutorial.Since different objects in the world reflect different amounts of infrared light, the results you get with this effect will depend a lot on which type of photo you're using it with. Outdoor scenes with lots of green trees and foilage tend to work best, and that's what I'll be using for this tutorial, but try it out with other types of photos as well to see what you get.
Here's the original image I'll be using for this tutorial:
