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interaxial distance for landscape

Started Apr 24, 2019 | Discussions thread
Turbguy1
MOD Turbguy1 Senior Member • Posts: 1,467
Re: interaxial distance for landscape
1

I may be repeating the words of others...

You must use care to ensure the farthest (probably infinity) subject elements are no farther separated ("disparity") on the screen by the average inter-ocular distance (65mm or so).  This avoids eye divergence that can cause eyestrain for some of an adult audience while they attempt to fuse the scene.  As mentioned by others, children may still have an issue, as their eyes will be closer together.

This mean that projection size must be considered.  Disparity separation adjustment is available in software, but will also effect the z-position of closer objects, so that they may appear in front of the screen (a potential "window violation").  This adjustment may also change the aspect ratio.  And, some audience seats will just have better viewing than others.  The farther away they sit, the deeper the scene will appear.

Using the typical 1/30th rule for interaxial distance for closest element in a scene that also includes infinity, your separation should be 1/2 a meter.   YMMV.

Test, test, test  with multiple viewers, too.

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