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> One alternative explanation offered was that
> the eye pupil becomes larger in the darkness:-)

Agreed - which would reduce the depth-of-field, but how exactly would
that improve the eye's resolution?

--
GregR



--- Alexandre E Eremenko  wrote:

>
>
> Frank,
>
> > Yes. The human eye certainly has higher resolution in daylight. I
> > think we discussed this at length a couple of years ago, didn't we?
>
> Sure. But as it always happens, there was a long
> discussion with different opinions and I don't remember
> whether it came to a definite conclusion.
>
> One alternative explanation offered was that
> the eye pupil becomes larger in the darkness:-)
>
> Alex.
>
>
>
> >
>


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