First, please note that this image has been shot with a very excessive inter ocular distance, so don't go straining your eyes looking at it.

This goes back to the first page and those 'rules'... One of the key things for viewing distance/screen size is to make sure you don't get people doing a Marty Feldman.

The appearance of a stereoscopic image on small screens is different to the same image on a big screen, so that's where you may need to whip out your spreadsheets for the rules, or make sure you are checking the images with care!

It's also worth remembering that this is more tricky with converged shooting as with parallel shooting as it is hard to capture images wrong via parallel - whereas if you converge too much the background can easily end up with way too much positive parallax, that cannot be fixed in post without a lot of hard (and expensive) work.

But, because of the exaggerated convergence of this image it does show well the exaggerated distance between objects and the lengthening of the objects themselves that occurs when large inter ocular distance are used...

It also shows well what happens if you get close to - or further away from - the screen...

Starting at a normal viewing distance, with your Anaglyph glasses, move closer to the screen, and then further away. Note the apparent shortening and lengthening of the distances (and objects) within the image.

If you click the above image a larger version will be shown which helps further with seeing the effect.

What this means is that the ratio of the viewer from the screen, based on the screen size, needs to be understood in determining the amount of stereoscopic effect that will be apparent. Again, there are all sorts of calculations for this, but as was stated at the beginning, this industry is about the image, not a course in mathematics!

Next Page - Projection and Monitoring

Contact steve@lightillusion.com for more info.