What difference does it make how far apart the camera lenses are and what does it look like? Well, as camera lenses are spaced farther apart it has the same effect as growing a bigger head. In the link below, you can see for yourself in 3D how the background and foreground stretch as the spacing between camera lenses increase and decrease. This link shows a cross view stereo pair. (about the only way to show 3D on a 2D computer monitor with any quality – and it is tricky to learn how to do)
To see it in 3D the trick is that you have to cross your eyes until the two red dots are merged (you perceive 3 images and look at the middle one). Lots of ways to learn how to do this, easiest is to hold your finger in front of you, look at your finger tip and move it towards the monitor and back towards your face. You should be able to see the red dots in your peripheral vision as you focus your eyes on your finger tip. The red dots will come closer together as you move your finger either towards your nose or towards the computer monitor. Once the red dots are aligned in your peripheral vision, then focus your eyes on the red dot and your brain should merge the two images into a single 3D image. As the image animates you see the effect of your head getting bigger and smaller. If you aren’t used to viewing cross view images it might take you a while to master it. Don’t sit too close to the monitor or else you will be crossing your eyes a bit more than you would naturally want. For easiest viewing sit away from your monitor about twice as far as you normally would.
I’d like your comment on if you were able to see the above in 3D and what you noticed.