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Introduction to three-dimensional photography Personal history At tender age of 13, I was given my first camera by an old man living on other end of village. It was this 8 x10 inch glass plate camera which started my journey. I never had my plates or films developed by lab, did all by myself and ruined much of it. But I learned When graduating to colour, it was Agfacolor. If I remember correctly, the main ingredient in their developer was di-ethyl paraphenylendiaminsulphate. Later in Canada, in an art studio of my own I blossomed into three-dimensional branch. I was proficient and had experiences, so I was able to teach 3-D course at the renown Sheridan College. However, despite my expertise and fully equipped photo studio I was not interested in starting a business. The cost of material was prohibitive and I did not have the conscience to charge the customers more. Besides, I had well paid and steady job. This applies equally to all other art. When moving to Philippines I lost most of my equipment to evil people, some gave away virtually free. My knowledge nobody can take away from me. Lesson 1 - Three-dimensional vision. Humans have two front-facing eyes with distance between some 2 and half inches. This is the basis of our perception of space. Second important input for our brain to work with is ability of our eyes to accommodate, change curvature in eye’s lens in order to focus on near and distant objects. Changing curvature of lens accomplished by different tension in the lens muscles is simultaneous with convergence, which is ability to move, change direction the eye axes point from acute angle employed in looking at close objects to parallel when focussing onto horizon. In taking and viewing three-dimensional, also called “stereo” images only the first two requirements, distance between camera lenses and between our ayes and eye convergence are functional. Next, lesson 2 - how the pictures are taken. No big deal.