Sami Serola (inactive)'s articles with the keyword: 3d

Several times I have mentioned a trick to view two dimensional images with one eye only. This trick may then help to experience the depth on a picture. But the trick does not work for everyone. I recently discovered an interesting study on the subject, and there it was found the ability to see depth in the two dimensional image increases when the image is viewed through a small hole. And yes, it worked for me. So, cut a small (approximately 1 cm) hole in the cardboard, and peek through it…