This tutorial is available as a PDF. Click here to view or download it
Bear with me, this is my first tutorial. This is a fairly simple way to make this effect, originally done with 3 different colored filters, it highlights motion with changing color.
Here's how you do it:
First, take your pictures, depending on how sharp you want the color differences to be, you should take 3 pictures, either in rapid succession, or over a long term (for clouds perhaps) also depending on how crisp you want the color differences you can change your shutter speed, longer for smoother color changes or faster for more distinct color changes. you're going to want to use a tripod to stabilize, as this process highlights motion.
Import your pictures, and open all three of them in paint.net
copy your second image into a new layer on the first (ctrl+shift+v)
repeat this with the third image. you now should have something like this:
Select the background layer go to curves (under adjustments) click on the drop down menu and set it to RGB. Deselect the red check box and slide down the line from the top right to the bottom right the layer should be all red. (sorry forgot picture)
now select the next layer, and again, open curves, be sure to be hit "reset" and then deselect the green box, and make the red and blue checked, if not already.
Now select the top layer and open curves again, hit reset, and unselect the blue checkbox and flatten the line, it should now look like this
now here's where the magic happens select the top layer and edit it's properties (right click, or in the bottom of the layers box) and select the "additive" blending mode:
repeat the process for the second layer, and viola! the non-moving part of your picture should be normal colored and the moving in several colors.
Here is the final result:
Another example with longer exposure time:
What can happen when your camera moves during the three pictures:
Hope you like it! I'm sure others will have more comments to improve/add to this process, but I have still to experiment very much with this effect myself. You can do this with as many pictures as you like, as long as it's in multiples of three. Anyone have have any idea to make the special colored areas darker/ more vivid?
