T3D Re: Visual acuity = 1' of angle?

[Peter Homer <P.J.Homer@xxxxxxxxxxxxx>]

>>So are cones 2 microns or 5 microns on center?
>>
>>I'm curious because this has a large effect on the required
>>resolution of a slide if there is to be no loss in stereo
>>due to impaired resolution.
>
>It's been awhile, so I'm not sure of my sources, but didn't Kingslake show
>stereo could resolve a significantly (whatever that means) smaller angle
>than mono?

As the test pattern is a simple grid of black and white lines it seems to
me that the rods should be taking as much or more of a part in resolving
the image as the cones as they have evolved for black and white vision.
Cones are for colour and I believe there is evidence that there are at
least three types for the primary colours. This could mean it would take
three cones to resolve a single white line as white. There are far more
rods than cones although the greatest concentration of cones is in the
Fovea Centralis or yellow spot mentioned in the original text. I canot
remember if there are more cones than rods in this area but even if there
are the distance between rods would also seem to be relevant.
                                P.J.Homer



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