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Filmscanners mailing list archive (filmscanners@halftone.co.uk)

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Re: filmscanners: RE: filmscanners: Re: Hello, thanks, and more.

My suggestion is to scan your negatives and slides at the highest setting - 
yes, you will have to downsample and lost some information but you would be 
losing it anyway by scanning at a lower setting.

Scan and save as a TIF for archive purposes - then adjust, downsample, sharpen 
and post.


----- Original Message ----- 
From: "Ken Durling" <kdurling@earthlink.net>
To: <filmscanners@halftone.co.uk>
Sent: Monday, October 22, 2001 3:08 PM
Subject: Re: filmscanners: RE: filmscanners: Re: Hello, thanks, and more.

| On Mon, 22 Oct 2001 15:49:22 -0400, you wrote:
| >
| >> Hold on - thanks to you all, maybe I DO understand this.  If scanned
| >> at 72 dpi, even a 4x6 print would need quite a bit of interpolation to
| >> get it up to a good screen size, ergo crap.    Is that correct?
| >
| >No, not interpolation.  Interpolation ADDS data.  Decimation removes data,
| >so scanning at 72dpi would remove data...if your scanner is 2700DPI and you
| >scan at 72DPI, you are only using 1 for every 37.5 pixels!
| >
| >Are you scanning prints?
| On my flatbed, yes.  Usually at 150 dpi.  But  now with the FS2710
| obviously I'm only doing slides and negs, which is what brought up all
| these questions.  
| I guess I'm missing the point here.  If I were to scan even a 4x6
| print at 72 dpi, and then want to display it anything larger than
| 288x432 pixels, wouldn't interpolation be necessary?  Even more with a
| slide or a negative?
| Ken


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