[Tig] Nyquist/Fourier (was: new on the TIG wiki)

[Dominic Case]

> it seems that deep focus offers benefit to the viewer in that he/she can 
> see detail in more of the image so that it feels more real.  With a deep
focus 
> image, the viewer may rotate his eyeball to look at detail in more areas
of 
> the image.  Comments?

Benefit to the viewer maybe (and in this postmodernist world does anything
else matter?). But there is always the filmmaker's intent to think about.
How are we supposed to be looking at this scene?

But when viewing the original scene there is no deep focus. At any given
instant you are focussed on what you are looking at. However, since the eye
doesn't resolve so well in the periphery, deep focus in the original scene
isn't often an issue, unless you are looking past a close object at a
distant object in the same line of sight. 

In effect, shallow focus works OK on the screen as long as you behave
yourself and don't look at things the cinematographer doesn't want you to
look at. 

As Tim points out, there are a whole new set of issues with 3D, where
resolving out-of-focus left and right images is one of those things that
creates headaches (literally). 

_________________________________
Dominic Case
Atlab Australia
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