LEARN FREE VIEWING 3D
When free-viewing stereoscopic pictures or videos you will stare into the distance, through the stereopair until a third image appears in 3D. It is easier to learn the cross-eye method, but it is not nearly as straining for the eyes.
Make sure the distance between the centre of the image pair is small enough for your eyes to point a little bit inward while the left eye looks at the left image and vice versa. Keep a comfortable distance to the image.
Take a deep breath.
Look at the small stereoimage at a comfortable distance.
Stare through the image, into the distance. Imagine you're watching the horizon.
Try to let objects on each image merge and focus on it without straining the eyes.
Welcome to the world of 3D!
Warning: if the distance between the images is too large but you still manage to see the 3D, you probably look like a horse.
TRY THESE STEREOIMAGES
Once you've focused your eyes on the first one, you don't need to refocus on each image. Just keep the focus and scroll down to the next image to see it instantly in 3D.
The images were captured with a normal camera using Kúla's 3D lens Kúla Deeper which is hyperstereoscopic, meaning you'll perceive stronger 3D effect than normally.