----- Original Message -----
From: "John Hudson" <xyyc@xxxxxxxx>
> "C.H.Ling" wrote:
> >
> > I can't agree with the use of ND filter will reduce contrast, ND
> > filters should reduce brightness of scene proportionally,
>
> Not so I think. All an ND filter does is to slow the rate at which the
> available light passes through the lens system from the outside world
> onto the film in the camera. The quality of the light per se is
> preserved. The use of an ND filter prompts the use of a slower shutter
> speed and / or a larger aperture.
>
> jh
>
??? Was I saying the same thing?
C.H.Ling
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