philip_pj
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On the vignette issue, I recall reading on the huge medium format site at the dawn of digital, that the reason film was potentially superior was actually the opposite of the explanation offered here.
The theory was that film emulsions have thicknesses that contains a huge number of more or less randomly distributed particles in layers - be they dye clouds in color film or grain in BW - that are excited by light striking them. Whereas digital was thought to be less deep, more linear and more isolated in each 'receiving cell'. Hence the corner issues.
Again, only placed here from what was discussed twenty years back. Don't shoot me by accident, for merely providing information.
'Fixing leaves behind only the formed color dyes, which combine to make up the colored visible image. Later color films, like Kodacolor II, have as many as 12 emulsion layers,[4] with upwards of 20 different chemicals in each layer.'
https://en.wikipedia.org/wiki/Photographic_film
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