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




> > > 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!
>
> Yeah, but when you finally knock i down to 72 dpi, you're going
> to discard all that info anyway.

Not necessarily.  That is why, in your next post, one method (scanner) may
be better than the other (PS), and vice versa.  A decent decimation
algorithm will use ALL the data via some algorithm to give you one point for
35 values...point is, the data IS used, not just thrown out.




 




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