Re: New Epson flatbed scanner...

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#66

From: Don
Date: Tue, 28 Feb 2006 14:02

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On Mon, 27 Feb 2006 21:57:22 +0100, HvdV <nohanz@svi.nl> wrote:

>> Indeed, by simply defocusing slightly the appearance of grain can be
>> reduced. And, self evidently, an out-of-focus image has less image
>> information/data than an in-focus image.

>Some people in this NG have mentioned that some defocussing might be 
>beneficial to reduce grain aliasing because it reduces the spatial frequency 
>content of the image to better match the sampling rate of the scanner.

Exactly! But by reducing the spatial frequency image data is thrown
away which was my point.

Djon's basic premise was that the amount of grain in a scan is a
function of "skill" which is wrong. Grain is a function (an intrinsic
part) of film image and reducing grain means reducing image data.

Don.

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From: Don <phoney.email@yahoo.com>
Newsgroups: comp.periphs.scanners,aus.photo
Subject: Re: New Epson flatbed scanner...
Date: Tue, 28 Feb 2006 15:02:38 +0100
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