T3D Re: Panum's limit

[john bercovitz <bercov@xxxxxxxxxxx>]

Peter Homer wrote:
> I have a photocopy from a book on psychology referring to the 
> "Panum phenomena".  I am not sure whether this is the same as  
> John Bercovitz was referring to as there are some differences.

I didn't mean to gloss over this statement.  I agree that what 
you found is different from what I was talking about but I like 
your finding inasmuch as it fits in one respect with stereo as 
we photographers have observed it: the 2 degree figure fits with 
the maofd method of 1/30 of the focal length.  However the 6' 
figure doesn't fit well with stereo acuity of 6" from various 
sources.  Indeed, common acuity is listed as 1' of arc or better.
It seemed from the way your info was presented that 6' was the 
lower end of where a stereo separation could be seen.  Is that 
how you read it?

Thanks,
John B


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