This is a little HOWTO (or tutorial) about swapping/inverting two color channels. I will swap the red and the blue color channel using Adobe Photoshop CS 3 to create a more “normal” looking picture with a blue sky on my infrared photo taken with my Nikon D80 and a Hoya R72 67mm IR-filter. I will not describe how to take a IR photo and I will assume you have access to such a filter and know how to use it properly.
The result after this HOWTO should look something like this spring image taken some days ago. Not one of my best photos but it will do the job in this post.
The photo might look something like this
Thats all that is needed to swap or invert two color channels in Photoshop CS3.
This HOWTO has not been tested on on earlier versions of Photoshop but I guess the features I’ve used aren’t new.
Posted by Hans-Henry Jakobsen