Re: TOBS: WDDK

From: Mark (nospam_at_nspam.com)
Date: 10/05/04 

Date: Tue, 05 Oct 2004 12:29:04 GMT

Spartacus wrote:
>
> I too need correctional lenses... Your eyes distinguish depth preception
> via a three dimentional image. Cameras produce a flat two dimentional
> rendition. Technology comes from our copying or duplicating (where
> possible) things that occure naturally but not always as efficiantly. i.e.
> birds don't need air ports or runways... Those with eye afflictions don't
> represeent the average. Film has a specific ISO rating. Your eyes adapt
> over a wide range of ISO to accomodate fpr either light or darkness.
>
SNIP a lot of other stuff:

There is a bit of a flaw here, which should be noted. Eyes do
indeed adapt over a range of light conditions - they do it by
opening and closing an "iris" to let more or less light onto the
light-sensing parts of the eye. It is the latter that is most
equivalent to film, not the whole eye. If you want to use the
eye/camera analogy, you must compare the whole camera to the eye
- a camera is designed to adapt to low or high light in much the
same way as our eyes work - by opening and closing an iris, to
let more or less light onto the film.

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