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

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RE: filmscanners: 35mm filmscanner choice




> > If a manufacturer was to list an lpi speck using the same method they
> > list dpi specks, they would simply be i/2 the dpi or ppi number.

It's actually a range.  If everything is "lined up right" the scanner CAN
resolve a line of the same width as one sensor's width.  If everything is
"lined up wrong", all you'll get is gray.  The term used in signal
processing is "reliably".  Basically, reliably means every time...so if you
want to know what resolution line a N SPI scanner can "reliably" scan, it
would just slightly under 1/2 N...  This does not take into account optical
issues.





 




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