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Digital BW, The Print

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Re: [Digital BW] Re: Flatbed scanners with film adaptors - good, bad, or ugly?

2002-07-09 by Godfrey DiGiorgi

That's kind of difficult to do ... scanners, far as I'm aware, typically
only really scan at integral multiples of the max optical resolution. The
Epson is a 2400ppi max resolution, the Minolta is a 2820ppi unit, so
integral multiples do not align. Any intermediary resolutions and you're
depending upon the driver to do interpolation so the results there are not
indicative of the actual scan value so much as they are of how good a job
the driver does interpolating. One small test I could do is to tell
photoshop to resample the Minolta detail bits at 2400 ppi and see what the
results look like ... I suspect they would look darn similar at that
point. 

I'll muck about with it a little more tonight.

Godfrey

On Tue, 9 Jul 2002, heliar333 wrote:

> You may be right. Perhaps you could make a scan with the Minolta that 
> closely matches the Epson's 2400 dpi. That's what I did: I just kept 
> lowering the number until I got the closest match. 
> 
> This won't tell us the actual resolution, but it might give us a 
> clue. I see the difference in your scans, particularly in your #2 
> scans, which show the text on the bottles. In the Epson scan, they 
> are almost illegible. I would politely ask, how low do you have to 
> set the Minolta to match the Epson ?

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