Paul T.
Veteran
"Indeed, something called Nyquist's Theorem states that you would need to scan at at least twice the resolution to get the information in the original. Since Velvia 100F has an RMS grain of 9, we'd need something that can resolve at least half that, or 4.5 microns to get the information the slide has to offer. "
is that true? I offer this as a genuine question, because I genuinely don't know.
Nyquist's theorem, as I recall, refers to digital sampling of an analogue, ie continuosly varying, waveform. But is 'grain' continuously variable? Isn't it more like a 'clump' of information?
is that true? I offer this as a genuine question, because I genuinely don't know.
Nyquist's theorem, as I recall, refers to digital sampling of an analogue, ie continuosly varying, waveform. But is 'grain' continuously variable? Isn't it more like a 'clump' of information?