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[filmscanners] RE: Color spaces for different purposes



Ok, that makes more sense to me now.  However, since the sharpened JPG file
upon opening by an user may then need to be resized and sharpening is
dependent on the image size, you have a problem.  It will then need to be
resharpened for it new size which may result in artfacts being produced
since you will be sharping an image that has already has sharpening done to
it prior to compression.  I would think it would be preferable and even
wiser to leave the image unsharpened and convert it to a JPG file, leaving
any sharpening to the user who opens the JPG file and determines how and at
what size the image is to be reproduced to do after resizing the image to
what is wanted and prior to reproduction.

> -----Original Message-----
> From: filmscanners_owner@halftone.co.uk
> [mailto:filmscanners_owner@halftone.co.uk]On Behalf Of Ken Durling
> Sent: Saturday, June 08, 2002 11:58 AM
> To: laurie@advancenet.net
> Subject: [filmscanners] Re: Color spaces for different purposes
>
>
> On Sat, 8 Jun 2002 11:56:29 -0500, you wrote:
>
> >Theoretically maybe; but out of curiosity, how does one do
> this in actuality
> >when one would have to first decompress the JPG file before
> one could carry
> >out the sharpening operations.  Afterwhich, one would then
> recompress the
> >file again in its altered state which would be what
> typically causes the
> >artifacts and deterioration in JPG files to begin with?
>
>
> Yes, I realized after I typed that what I actually do is resize the
> TIFF, edit,  * sharpen * and THEN go to JPEG.  It's in this resized
> TIFF that I see the increased sharpening or USM effects, over the raw
> intitial file.
>
>
> Ken Durling
>
> Visit my new easier-to-browse PhotoSIG portfolio:
> http://www.photosig.com/viewuser.php?id=203
>
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