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[filmscanners] RE: 8bits vs. 16bits/channel: cantheeyeseethedifference



> -----Original Message-----
> From: filmscanners_owner@halftone.co.uk
> [mailto:filmscanners_owner@halftone.co.uk] On Behalf Of
> Austin Franklin
> Sent: Monday, March 17, 2003 6:52 PM
> To: frankparis@comcast.net
> Subject: [filmscanners] RE: 8bits vs. 16bits/channel: can
> theeyeseethedifference
>
>
> Hi Frank,
>
> >That's what PS
> > actually does? Of course that IS dithering, not aliasing.
>
> But it doesn't do that.  It simply chops off the lower 8
> bits.  That is not dithering or aliasing.  Converting 0x1234
> to 8 bits is simply 0x12.

Hmmm. We seem to have a disagreement here. I wonder who is right?

> Now, if you are processing some data, and have to "split the
> difference", happening to arrive at 127.5, that is
> quantization error, not dithering.

True, if that's what PS does. The other guy seems to disagree with you,
though.

Frank Paris
frankparis@comcast.net


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