In my plogís Iíve been using stereoscopic images for a while now because I believe they are a great way to show miniatures. Stereoscopic images are pairs of 2d images that when viewed correctly will result in one 3d image. By now I received several questions on how to view them and how to make them so it became time to make a short tutorial on how to make them and view them.
Iíll shortly describe how they work, and thus how you view them, then there will be a few examples and final the largest part will be a step by step guide on how to make your own stereoscopic images (which is really easy).
How does it work
Most people have two eyes which are placed slightly apart, both eyes observe 2 dimensional. Because the eyes are set slightly apart there will be subtle differences between what your left and right eye observe, these subtle differences are then used by your brain to recreate depth.
Now if you have two images that have been recorded slightly apart (as if by your two eyes). Then you can trick your brain into combining the two into one 3d image. This can be done either by relaxing your eyes, thereby focusing behind the plane where the actual images are, this is called parallel view. Or by crossing your eyes thus focusing in front of the plane, this is called cross-view.
See this picture:
As can be seen for parallel view the right image is for the right eye and the left image is for the left eye. With cross eye this is the other way around. This means that an image made for one type of viewing canít be used for the other type. From here on Iíll focus on cross-eyed as I find that the easier method, keep in mind that the other method is just as viable just make sure the images are the other way around. (As usual more information on Wikipedia as well as the other methods of stereoscopy)
Now some practise, gently cross your eyes till you are able to overlap the two 0ís. When that happens focus on the central of the now 3 0ís and you should be able to hold that image without effort (this works best with a black background).
If you succeed with this move on to some of the real images:
Here's a blood knight I made:
And for 40K I've got a Incubi for you:
Of course can find more of them in my Dark Eldar plog (and 1 more in my fantasy plog).
The next post will guide you step by step trough making your own stereoscopic images